1 Corinthians 2:14-16

Young's Literal Translation

¹⁴ and the natural man doth not receive the things of the Spirit of God, for to him they are foolishness, and he is not able to know [them], because spiritually they are discerned;

¹⁵ and he who is spiritual, doth discern indeed all things, and he himself is by no one discerned;

¹⁶ for who did know the mind of the Lord that he shall instruct Him? and we -- we have the mind of Christ.