ColinCat, I am surprised you are still on CC. You seem like an intelligent person. You are not here seeking Truth so why bother? Those who are chosen will not be swayed, indeed can not be swayed.
And this is the truth of it, when you are called, you cant not believe, you will always know whats right. So many of the called have experiences that affected their whole life and they will never forget. They now know that God is real and not lying. They know now the truth and no amount of words will change that.
If you want to change what a believer knows is, true, you will not
They have something they cannot deny, and they cannot prove it. The only way you could have that is if you opened yourself with faith to Him, too. To let go of yourself and accept Him. Other than that, you will continue with the deception that has been put on you until the end, which will not be of peace.
God never promised you Hed prove anything, He told you to come to Him in Christs name in faith, and He would be with you. If you refuse His demands and make your own, you will never be with Him.