Regarding Can I remarry because my wife left the church and left me? Sorry, but your responses offer no grace. I think you fail to understand Scripture properly. There is zero logical reason why a man must remain bound to loneliness because his rebellious wife left him. Another unhumble Pharisee with no real hope to offer anyone except 'theology'.
"For do I now persuade men, or God? Or do I seek to please men? For if I still pleased men, I would not be a bondservant of Christ" (Galatians 1:10).
While you claim it is illogical, you offer no logic -- only a complaint. While you believe I fail to understand the Scriptures you recognize that it it is a religious belief (theology) and fail to prove your point.
As a preacher, I cannot offer grace. I can only teach about the grace God has offered, and that has to be on God's terms. That you are unimpressed by what God says is something I can't help you with.