1 Corinthians 2:10

2:10 God has revealed these to us by the Spirit. For the Spirit searches all things, even the deep things of God.

1 Corinthians 2:14

2:14 The unbeliever ¹  does not receive the things of the Spirit of God, for they are foolishness to him. And he cannot understand them, because they are spiritually discerned.

¹ tn Grk “natural person.” Cf. BDAG 1100 s.v. ψυχικός a, “an unspiritual pers., one who merely functions bodily, without being touched by the Spirit of God.”