For what man knows the things of a man, except the spirit of man which is in him? even so the things of God knows no man, but the Spirit of God.
All Commentaries on 1 Corinthians 2:11 Go To 1 Corinthians 2
Tertullian of Carthage
AD 220
And He ought rather to have been that; as if any one knew what is in God, except the Spirit of God. This alone, indeed, knew the mind of the Lord. For "who knoweth the things of God, and the things in God, but the Spirit, which is in Him?", which He had known most intimately, even from the beginning. "For what man knoweth the things which be in God, but the Spirit which is in Him? "