Christians believe all sorts of things, based on the Bible. Some of our beliefs are held fairly lightly – we know we might well be wrong, and it doesn’t really matter if we are, but we hold an opinion anyway. These beliefs, you could say, are WRITTEN IN PENCIL. We could rub them out and replace them with an alternative belief fairly easily, without the rest of our faith being affected much.
Then there are beliefs WRITTEN IN INK. These are things which we hold to more firmly – our position on baptism, or spiritual gifts, or church leadership, say – and which we have a position on as a church, not just as individuals. At the same time, we recognise that sincere Christians hold different views on them, and that in the end, they might be right. So we affirm our beliefs clearly and happily, but without falling out over them with people who disagree.
But the most important convictions run deeper than that. There are some things we believe that, if they were removed, would make Christianity collapse, or become a totally different sort of thing. These are beliefs we would die for, and many Christians have. Some things we believe are WRITTEN IN BLOOD.