'Man' in the Bible

so that no one would be disturbed by these afflictions; for you yourselves know that we have been destined for this.

and that no man transgress and defraud his brother in the matter because the Lord is the avenger in all these things, just as we also told you before and solemnly warned you.

So, he who rejects this is not rejecting man but the God who gives His Holy Spirit to you.