Of course it is not a coincidence. Religion is a result of a pattern-seeking, self-aware animal trying to understand a big scary world in such a was as to keep the herd together and identify enemies.<quoted text>
That is the miracle of the resurrection. Actually for the entire long stretch of human Written history, religion has been a factor. And I do not think it is coincidence that most old religions have some things in common.
There are going to be similarities in such schemes.