John Newton on seeking God's wisdom

Above all, my dear friend, let us keep close to the Lord in a way of prayer: He giveth wisdom that is profitable to direct; He is the Wonderful Counsellor; there is no teacher like Him. Why do the living seek to the dead? Why do we weary our friends and ourselves, in running up and down, and turning over books for advice? If we shut our eyes upon the world and worldly things, and raise our thoughts upwards in humility and silence, should we not often hear the secret voice of the Spirit of God whispering to our hearts, and pointing out to us the way of truth and peace? Have we not often gone astray, and hurt either ourselves or our brethren, for want of attending to this divine instruction? Have we not sometimes mocked God, by pretending to ask direction from him, when we had fixed our determination beforehand? It is a great blessing to know that we are sincere; and next to this, to be convinced of our insincerity, and to pray against it.

John Newton, Letters, pp.40f