The only requirement to be a Christian is to believe in the Resurrection and its purpose according to scripture. Anything else is just argumentative between sects of the religion.
To be Christ-like is what he really was referring to, and most people, whatever beliefs they have or don't have, would have a hard time with that measurement because it is set so high. Almost too high for a human to meet. But it's a goal, not a final outcome, and that's really key. Even as a non-believer I can appreciate the better parts of the Bible, just like any other religious or philosophical text. It's a shame that too many of the believers of the religion don't understand or care to understand some of the basics, the ones that they'll even quote themselves while being okay with harming others.
