1 Corinthians 2:10 - 16
NKJV - 10 But God has revealed them to us through His Spirit. For the Spirit searches all things, yes, the deep things of God. 11 For what man knows the things of a man except the spirit of the man which is in him? Even so no one knows the things of God except the Spirit of God.
For follow-up discussion and general commentary on the topic. Comments are sorted chronologically.