Mr 6:11 And if any place will not receive you and they will not listen to you, when you leave, shake off the dust that is on your feet as a testimony against them."
Some people just aren't going to listen or learn from the scriptures that are clear. Shake the dust off your feet and don't waste your time.
“In a time of deceit telling the truth is a revolutionary act.” ― George Orwell
It's not over when you lose. It's over when you quit.