Anyone who chooses to do the will of God will find out whether my teaching comes from God or whether I speak on my own.
Being a Christian is an experiential thing. Apologetics are all very well, but you can't argue someone into the Kingdom. People talk about a leap of faith and there is something in that. When I was a convinced as I could be that there was no other way, I decided that I would live Chist's way and Lo and behold, it worked.