Charles Haddon Spurgeon said this quote

John Bunyan says that he never forgot the divinity he taught, because it was burnt into him when he was on his knees. That is the way to learn the gospel. If you learn it upon your knees you will never unlearn it. That which “men” teach you, men can unteach you – if I am merely convinced by reason, a better reasoner may deceive me. If I merely hold my doctrinal opinions because they seem “to me” to be correct, I may be led to think differently another day. But if “God” has taught them to me – he who is himself pure truth – I have not learned amiss, but I have so learned that I shall never unlearn, nor shall I forget.