1 Corinthians 2:4

2:4 My conversation and my preaching were not with persuasive words of wisdom, but with a demonstration of the Spirit and of power,

1 Corinthians 2:13

2:13 And we speak about these things, not with words taught us by human wisdom, but with those taught by the Spirit, explaining spiritual things to spiritual people. ¹ 

[2:13]  ¹ tn Or “combining spiritual things with spiritual words” (i.e., words the Spirit gives, as just described).