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
Severian of Gabala
AD 425
God and the Holy Spirit are two persons, whereas a man and the spirit in him are not two persons but one man. What Paul means is that just as in the man there is a cohesion in knowing, so the knowledge of the Father and the Spirit is one. What the Spirit searches is therefore already known to him. .