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Today is surely a watershed moment for the world: 20 January 2021, the end of Donald Trump’s administration. Whether or not one is an American, this change of administration will surely impact the world in one way or another.

This is not a sermon about America or American politics, however. Rather it is a sermon about what defines a Christian. When we look at the American right and left, who are so profoundly divided at this time, and yet who both comprise large numbers of Christians who believe that their politics is aligned with their Christian faith, we must ask, What does it mean to be a Christian? How can Christians, who follow the same book of teachings, be so polarised when it comes to their beliefs, practices and policies?

Perhaps one of the reasons is the weight that different groups of Christians give to different parts of the Bible. While we (are exhorted to) believe that “all Scripture [that is, the whole of the Bible] is God-breathed and is useful for teaching, rebuking, correcting and training in righteousness” (2 Timothy 3:16), if we base our Christian beliefs, practices and policies on the first Testament (the Old Testament) more than on the Gospels, or even on the rest of the second Testament more than on the Gospels, then something is wrong.

The Gospels present to us the very life, ministry and teaching of God the Son. These are not subsequent interpretations of Christ’s ministry, but Christ’s ministry itself. If we want to see God, we must look at his Son; and we get his Son in the Gospels. Jesus Christ’s life, as recorded in the Gospels, must be the template for Christian belief, practice and policy. And all the rest of the Bible must be interpreted through the Gospels.

Ironically, our reading today is not from the Gospels, but from Paul’s letter, where he writes about the central message we get from the Gospels: live a life of love.

Be kind and compassionate to one another, forgiving each other, just as in Christ God forgave you. Follow God’s example, therefore, as dearly loved children and live a life of love, just as Christ loved us and gave himself up for us as a fragrant offering and sacrifice to God. (Ephesians 4:32-5:2)

The life of a Christian must be rooted in love. This passage is not about love for other Christians, but love for all humanity. Paul emphasises the love that God had for us before we were saved – the love that led to God’s forgiveness of us and of Christ’s offering of himself as a sacrifice to God – these are about God’s love for us before we were saved, and thus the example is for how we love the whole world.

Love is the foundation of Christian life. Indeed, these verses are part of a larger passage which opens as follows:

So I tell you this, and insist on it in the Lord, that you must no longer live as the Gentiles do, in the futility of their thinking. They are darkened in their understanding and separated from the life of God because of the ignorance that is in them due to the hardening of their hearts. (Ephesians 4:17-18)

In other words, Paul sees this ‘life of love’ as constituting a fundamental difference between Christian life and non-Christian life. Our love for others is what is supposed to define us as Christians and differentiate us from everyone else. Indeed, Christ himself gives us this great command:

A new command I give you: Love one another. As I have loved you, so you must love one another. By this everyone will know that you are my disciples, if you love one another. (John 13:34-35)

This love for other people (and indeed for the whole of creation) is fundamental to what it means to be Christian. It is only after all this, that Paul then says, “But among you there must not be even a hint of sexual immorality” (Ephesians 5:3) and then goes on to talk about morality. Morality is important, but the life of love is even more important. When we place morality above love, we are out of step with Christ, who consistently placed love above everything else. If you are placing morality above love, you must go back to the Gospels and see how Jesus lived, what he said and how he related to people.

What is most important and definitive in the life of Christ is the life of love, which is a love that is radical and inclusive. It is this kind of love that is supposed to inform our beliefs (how we understand God, ourselves and the world), our practices (how we life our life moment by moment) and our policies (or politics).

We pray for the people of America and their new president. We pray for a drawing closer together of the American people, a reduction in polarisation and anger, and a greater rooting of life in the Gospel message of love for one another. And we pray also for ourselves and our nation, which has its own challenges.