Christianity is a belief that the bible is the word of God. Did you know that the Bible is not one book, but many books? In fact, the word Bible comes from 'ta biblia', which is simply ancient Greek for 'the books'! The Bible is one of the main sources of Christian beliefs.
If you live in the UK, it's probable that you will already have at least a basic understanding of Christianity. Along with other religions, Christianity has had a huge impact on how humanity has changed over the years.
See how much you know about Christianity by testing yourself with this KS2 RE quiz.