1 Corinthians 8:2

8:2 If someone thinks he knows something, he does not yet know to the degree that he needs to know.

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.

[2:14]  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.”