The text is changing. Every time that I make an edition of the Greek New Testament, or anybody does, we change the wording. We are maybe trying to get back to the oldest possible form but, paradoxically, we are creating a new one. Every translation is different, every reading is different, and although there’s been a tradition in parts of Protestant Christianity to say there is a definitive single form of the text, the fact is you can never find it. There is never ever a final form of the text.〔(BBC Radio 4 programme "The Oldest Bible" )〕

There is also a fascinating place in the codex in the Sermon on the Mount where we can see a change to the text altering the attitude to anger. Jesus says the person who is angry with his brother deserves judgement. But there is a variation on that. If you look at the page in Codex Sinaiticus you will see that somebody’s added a little word in the margin in Greek which changes it to “the person who is angry with his brother without good reason deserves judgement,” and there you’ve got two very different views of Christian life.〔