I’m reminded of a phrase, “Reasoning is the practice of non-contradictory identification”. If significant evidence evolved for the existence of the Christian God that resolved the contradictions within the Bible and between the Bible and all that we know, and if it were more persuasive than alternative explanations, then that would be “proof”. True not because it’s “proved to me”, but because evidence evaluated through induction or deduction, to assumptions, axioms, and sequentially derived conclusions as objectively as possible leads to that conclusion.
That’s how opinions are arrived at that are based on reason rather than emotion or faith. I’m happy and secure in my beliefs, and respectful of others. Some Christians accept this, move forward and live happy honorable lives with their faith. Others go though what I hope is just “phases” of bad behavior, denying that their faith is not provable in a more objective sense, insulting non-believers and misrepresenting other ideologies. I think these people are a relatively small group, similar to the percent of those in the population that act badly. Nevertheless, I think it’s a moral imperative to highlighting that, often just using their own words.