The fundamental tenets of Christianity show why Christians are called to love not just one another but all created things. 

1. God is love. 

2. God created everything. 

Therefore, God loves everything he created.  

3. God appointed humanity as the guardians of creation. 

Therefore, a fundamental part of our identity and calling as human beings is to protect and sustain all that God created. 

This lies at the basis of everything Christians believe and do. But a case can be made that is more basic still because it appeals, not to anything distinctively Christian, but to natural human wisdom. The climate crisis is not a Christian crisis. It’s a crisis for everyone who cares about their future and that of our planet. The climate crisis may be something unprecedented in the history of humanity, but the principles that are needed to resolve it are not new at all. Sustainability is not a new or particularly abstruse idea. It is something everyone understands as basic common sense. If I cut down trees faster than they can grow, I won’t be able to do that forever. One day I will cut down the last tree and then there won’t be any more trees, ever again. If I catch fish faster than they can reproduce, then one day I will catch the last fish and then won’t be able to catch any more ever again.  

But it’s not only about foresters and fishermen. Since the dawn of humanity, we have been living sustainably – wisely preserving resources and using only what we can replace, so that we and our descendants can continue to live. This applies to everyone regardless of their profession. All of us, if we spend more money than we earn, are living in a way that cannot last for long. If we use resources at a faster rate than we can replenish them, we will run into trouble at some point in the future. Every person possessed of reason and common sense knows this intuitively without having to be taught it. Only someone seriously deluded, foolish, or with some kind of mental health problem fails to understand the need for sustainability in order to have any kind of future at all, let alone a pleasant future. 

We are all culprits in part, since we all contribute to non-sustainable living. But we are also partly victims of forces beyond our control, large cultural forces that shape and determine our actions more than we can imagine. We have very little power over those structural forces and currently things do not look good. Common sense principles aren’t working. The climate crisis is only getting worse. So, what do we do?  

It is at this point that Christianity has something special to offer to the problem. 

First, Christians are never called to be defeatist or to throw in the towel. This is because we are called to an enormous hope, a hope that surpasses understanding, a hope that the world cannot understand because it stands over against all the odds and all the possibilities. This hope is rooted in the conviction that our God is God Almighty, that he has not abandoned his creation, and that he has power to save. He is a saviour. He is the God of our salvation. This is the God we believe in. The climate crisis may look bleak right now, but Christians need never despair or become indifferent. If we do our small part, we can trust that God is in control of what is out of our control.  

Secondly, Christians believe that every human being is a free agent with the capacity to choose how he or she will act. Our freedom may be limited by the societal structures that shape and constrain our choices, but it is not destroyed. We can still make choices within those limits to buy and live more sustainably – anything from choosing a holiday destination within driving distance, to giving up beef (by far the worst food for carbon emissions). There is something all of us can do.  

Thirdly, Christians believe in a God who transforms hearts and lives, winning them to the power of the gospel and to a new way of living that is free of the shackles that this world – the structures of society – puts on us. This transformation is slow – slower than we would like it to be sometimes. We feel the shackles still gripping us at times. We are not expected to change everything all at once, to become holy overnight. Nevertheless, God gives us the power to change our lives, and to become part of the solution rather than part of the problem. The way towards sustainable living is not to try to change everything at once, but to ask: what one thing can I change in my daily lifestyle that would make it more sustainable? And then once we’ve mastered that and integrated it so we no longer even think about it and it’s just a default, then we can ask: what’s the next thing I can do? All of a sudden what looks like an unimaginable height of transformation, when it is broken down, becomes a series of manageable steps.    

Even if we do everything in our power, we cannot by ourselves avert a possible catastrophe. We are small players in a big game. Christians do not naively believe that God will sweep in and fix everything if we just wait. That would be to deny our responsibility, and it is not what hope means. Hope means the opposite: that we continue to fight to avert climate disaster even when it seems hopeless. Christians are called to be part of the solution rather than part of the problem. We are called to live in such a way that, if catastrophe comes, it won’t be because of us – to live in hope that our actions are meaningful and worthwhile and that we are in the hands of a God who is far more powerful than the most powerful forces in this world.