No matter who a man may be, if he teaches you in accordance with his own thought and mind his teaching is false. But if he teaches you in accordance with the Word of God, it is not he that teaches you, but God who teaches him. For as Paul says, who are we but ministers of Christ and dispensers or stewards of the mysteries of God?
Again, I know for certain that God teaches me, because I have experienced the fact of it; and to prevent misunderstanding this is what I mean when I say that I know for certain that God teaches me. When I was younger, I gave myself overmuch to human teaching, like others of my day, and when about seven or eight years ago I undertook to devote myself entirely to the Scriptures I was always prevented by philosophy and theology. But eventually I came to the point where led by Scripture and the Word of God I saw the need to set aside all these things and to learn the doctrine of God direct from his own Word.
Then I began to ask God for light and the Scriptures became far clearer to me – even though I read nothing else – than if I had studied many commentators and expositors. Note that that is always a sure sign of God’s leading; for I could never have reached that point by my own feeble understanding. You may see then that my interpretation does not derive from the over-estimation of myself, but the subjection. — Huldrych Zwingli