Why Jesus Christ?

God starts making promises after we become sinners. He gives us an opportunity to start trusting him again—to discover that he is worthy of our love. So, it’s not surprising that every promise he makes (in the Old Testament) is based on what Jesus will do, or (in the New Testament), has done among us. 

The Bible has many promises that God will be with us or help us (Psalm 37 and 91:14-16 are some well-known examples). We may be comforted by them. But then, if we imagine that these promises will be fulfilled because we are nice people or because we feel good when we read them, we are deceived. We need what Christ does to receive what is promised.

Jesus says ‘Yes’ on our behalf to everything God promises (2 Corinthians 1:20). We are slow to believe and reticent to trust. Not Jesus! He wants God’s will to be done on earth as it is in heaven. 

For example, he has power to lay his life down and take it up again because his Father has commanded it—or we could say, promised it (John 10:18). That’s amazing certainty to have in a world that’s full of danger.

It’s Christ’s ‘Yes!’ that enables us to say ‘Amen!’  We learn from him that God means what he says, wants do us good and can bring about what he has promised.

Notice how confident Paul is when he says this. Because God’s promises are being fulfilled in Christ, he can be definite in making promises to other people. The reliability we need to make a good future comes from what Christ does.

This is why, when Jesus is born, that there is so much joy (Luke 2:8-14). A promise made to King David—that he would have a great Son—has come. All the things God will do to save our broken world and damaged lives are now going to happen (Luke 1:67-79).

What God promises David is central to all the promises God makes. A descendant of his will reign forever (2 Samuel 7:12-19).

Finally, someone will come who can deal with this world, and with us—given our capacity for deceit and distrust. He will be greater than David—his ‘lord’ in fact (Psalm 110:1; Matthew 22:44-46). He will sit beside God until all opposition is overcome. 

He will be a priest as well as a king. That’s because we need more than a leader to solve problems. We need someone to bring us to God.

As Israel’s history becomes worse and worse, God’s promises about his King get better and better. This son will be God’s Son. And the idea that any power could frustrate his purpose is laughable (Psalm 2).

Later generations are told that he will be called ‘Wonderful Counsellor, the Mighty God, the Everlasting Father, the Prince of Peace’ (Isaiah 9:6). Through him, the whole earth will be given peace, and will know God (Isaiah 11:1-9).

When Jesus comes, promises made about David’s Son are quoted to show that he is the one promised. Everyone needs to decide if Jesus is this Christ or Messiah—like Peter (Matthew 16:15-16), or Jewish leaders (Matthew 26:63-64) or the people at Pentecost.

This is what Peter talks about after Jesus ascends and sends his Holy Spirit. God’s people have killed their anointed Leader and King. But God has raised him up. They need his forgiveness—urgently (Acts 2:36-38). 

This is why it’s so important to hear God’s promises brought to us in Jesus’ name. He’s taken account of our preference to trust ourselves, our ungratefulness and resentment. And, he comes to us, raised from the dead, with the offer of new life.

This promise is not only being made to Peter’s audience. It’s being made to us—as many as God calls (Acts 2:39; Romans 15:8). Our sins too can be forgiven. We too can be reconciled to the God we have offended. And we can hear all the promises Christ came to fulfil and be persuaded that God really means to do us good. 

We can read Psalm 37:4: ‘Delight yourself in the Lord and he will give you the desires of your heart’. We can hear the same thing from Jesus: ‘If you abide in me and my words abide in you, ask whatever you wish and it will be done for you’ (John 15:7). 

Preaching about Jesus as God’s promised Saviour starts with forgiveness through Christ’s death, and with the renewal of hope through his resurrection (Acts 13:23, 32, 38; 26:6). By raising Jesus from the dead, the promise made to us is not, ‘You will die’, but ‘You will live!’ 

Our life is now full of hope. We can be what we really are because of ‘the promise of life that is in Christ Jesus’ (2 Timothy 1:1). Instead of being subject to the fear of death (Hebrews 2:14-15), we are liberated by the expectation of life and resurrection. 

No wonder the promises of God needs this coming King. No-one can guarantee anything unless they are in charge. And here, Jesus has taken charge of everything—our self-sufficiency and troubles and fears on the one hand, but also, all the wonderful purpose of God for us on the other. He has led us into the meekness of trusting in him. 

This changes our expectations, our habits, our relationships, our conversations—everything!

Who can we trust?

Everything we do in life needs some confidence that it might work out well. And God has not left us in the dark about this. From the beginning, he has surrounded us with promises. 

For example, a Psalm tell us that ‘the meek will inherit the land and enjoy peace and prosperity’ (Psalm 37:11). Jesus reflects this in his Sermon on the mount, saying that the meek are blessed because they will inherit the earth (Matthew 5:5). 

Really? The world looks like it belongs to those who take it by storm. So how can this promise, and many others, settle our hearts to trust in God and in Jesus whom he has sent?

From the beginning, humanity decided it wouldn’t trust God. And ever since then, that’s been our problem. We’d rather be the ones who are trustworthy. God must painstakingly demonstrate that he is the only one who can guarantee our future (Isaiah 48:3-8). And this is what he does.

The numerous promises made by prophets, or by Jesus and his apostles belong in a structure of promises—covenants of promise (Ephesians 2:12). If we know what these are, it helps us understand all the others. 

The first of these is a promise made to Abraham. His whole story is in Genesis (chapters 12—25), but here is how Paul describes him coming to trust in God’s word (Romans 4:13-23). 

First, God tells Abraham that he will inherit the world (v. 13). 

This means he will have a family, his own country and become a nation. That’s just a start. He will become the father of nations (v. 17). God will bless him so he can be a blessing in the whole earth (Genesis 12:1-3).

Abraham’s family has come through a time when people gathered together to secure their own future—by building a massive tower—at Babel (Genesis 11). It all comes to nothing because God confuses their languages.

God is showing Abraham, and us, a better way. Paul says God’s promise is for all of us who don’t trust in ourselves but in his goodness (v. 16). (What he’s doing in this letter is comparing Abraham with people who are trying to justify themselves by being good law-keepers.) 

Paul says we are added to Abraham’s family and share the family inheritance. Abraham will ‘inherit the world’ (v. 13), and so shall we.

This might sound a long way from what we are interested in, but think about the promise Jesus makes to us all: the meek will inherit the earth. We all need to know that God will provide for us and give us our place in life. Our future is important—and it matters to him.

The disciples of Jesus give us an interesting example of this (Matthew 19:27-30).

We may be thinking of inheritance as property or wealth, but God is thinking of us being a blessing in it—not being concerned with ourselves but with those we can serve. This is the way Jesus Christ will inherit the earth, and it’s the same for us. 

We don’t have to make ourselves significant, important, rich and powerful. God is promising, not just to keep the world functioning (the promise to Noah) but to make us significant in his kingdom (Matthew 25:34)—to bless us and make us a blessing.

Second, here’s how God evokes trust.

Simply, God speaks to Abraham (Genesis 12:1). We don’t know what this looks like but it gets Abraham going. The God of glory has come to him (Acts 7:2). 

It’s the same now. When we hear the gospel preached, God’s word comes to us. The God of glory has appeared in the person of Jesus (2 Corinthians 4:6) and his glory has been revealed in what he has done. We have more to go on than Abraham did.

Faith comes by hearing this word of Christ (Romans 10:17). We don’t know how this happens, but it’s how God brings us to trust him.

Abraham doesn’t sit easily with this. He doesn’t have a son, let alone a family or a nation. And this continues for some time. What God is promising is impossible. It’s not easy trusting what we can’t see.

Our natural habit is to want immediate gratification. But trusting God involves waiting. We need to stop pumping up our own importance and see that God is ‘waiting to be gracious’ to us (Isaiah 30:18). There’s no other way to know that God is good.

God persists with Abraham. And, he grows strong in faith (vv. 18-19).

Third, two miracles now happen.

Abraham confesses that God is good and true and reliable (v. 20). This is a reversal of all that went wrong in Eden. Abraham doesn’t need to make himself great. He’s found that God is the one with all the glory—he’s good, and he’s trustworthy.

This is what happens to every Christian. We can see that the one who made the world knows how to look after it. We know he is being kind to his creatures and that he’s making a world community that reflects his kindness. We know God has the power to do what he promises (v. 21).

The second miracle is that God calls a sinner righteous (v. 22-25). We’d sought to be the ones who were right and good—and made a thorough mess of it. Now, when we stop seeking to create our own righteousness, God gives it to us. 

We have more to go on than Abraham ever did. We’ve seen the God of glory in the face of Christ because he gave up his Son to death for our sins. 

We’ve also seen him being raised from the dead, not just to prove that he was in the right all along, but to reckon this justification to all of us who trust him. Being called ‘right’ by God changes everything.

We can now hear God’s promises clearly. We will inherit the earth. We will inherit the world over which God reigns—his kingdom (Matthew 25:34). We will have eternal life (Matthew 19:29). And if this is the way we are living, we will have his promise that he can look after all our needs and take us through our troubles as well (Matthew 6:31-34). Life is good!

Is the world safe?

The Bible is peppered with God’s promises. They are the certainties we need to know as we navigate our way through all that happens in this world.

Politicians know they must promise something to have us vote for them. But they can’t ensure that what they promise will happen. Only God can do that!

Here’s some of the first promises God makes (See Genesis 3:15; 8:20—9:17).

The first is announced to Adam and Eve in Eden. They have asserted their independence from God and want to determine what is right and wrong for themselves. Because of this, as God had told them, they will die. 

And since then, we all die. And we must deal with many threats and uncertainties along the way. Death, and the fear of it, lingers closely. 

But immediately, God makes this promise. Adam and Eve will have a child who will undo the mischief caused by Satan’s deadly temptation (Genesis 3:15). It will come at a cost to the promised child, but shows, immediately, that God’s enemy will never have the last word.

We can think this is just a quaint story, or we can see it he one chance we have to live a full life. 

The story that follows in the book of Genesis bears this out (chapters 3—5). The people who believe God’s promise find some poise and certainty, and generosity in life. Those who won’t believe this promise feel threatened, become angry, grasping and even cruel.

The child God has promised will be no less than his own Son—Jesus Christ. And the rest of the Bible is the story of this unfolding—and we shall see. But, already, God’s promise changes how people live.

Then, there’s another great promise.

By the time of Noah, the earth has become so violent that God promises to destroy it. Except for Noah and his family. God will gracious to him (Genesis 6:8). He must build what amounts to a floating zoo to house his family and many animals. 

The flood that then comes is so comprehensive that only those floating in the ark survive. God is starting again with a new couple. The story is quite long (Genesis 6—9), but, at the end of it, Noah says thankyou with a sacrificial offering. 

And God makes a promise. ‘I will never again strike down every creature as I have done’ (Genesis 8:21-22). And the next line is very important—seasons and harvests will continue as long as the earth remains.

This is a promise to all of us—all of Noah’s descendants. God is establishing a relationship or covenant with the human race. He will never again reduce the world to a single family with a flood like the one they have just had. This is what we are to remember when we see a rainbow in the sky. Seasons and harvests will continue.

Think of the difference it makes if you have a promise that the Creator will see to it that harvests will continue.

But most interesting is the reason why this is so. ‘The intention of men’s hearts is evil from his youth’. This is the same reason God has for flooding the earth (Genesis 6:5). Nothing has really changed. But God’s relationship to what he has made is a relationship of grace. We are not going to get what we deserve. We’ll get what he has promised.

If this is what we believe, it makes a huge difference! Without it, we become threatened, anxious, angry, grasping, and even cruel. But believing God’s promise can make us trusting, settled, and even generous.

As we think about people around us, we can tell them what Paul says. ‘We are bringing you good news, telling you to turn from these worthless things to the living God, who made heaven and earth and sea and everything in them. … He has shown kindness by giving you rain from heaven and crops in their seasons; he provides you with plenty of food and fills your hearts with joy’ (Acts 14:15-16).

Right now, we are facing a massive food shortage around the world. But, in fact, the world is producing more food than ever before. We don’t do very well distributing it evenly. But think of the difference it will make if we believe that God has promised never to destroy the means of production.

God has promised this, not because we deserve it. We never will. He’s promised it because he is kind. And not for any other reason.But there’s still the promise of a child to come. And this is where the next promises will take us.