1 Corinthians 2:1; 1 Corinthians 9:14; 1 Corinthians 11:26

1 Corinthians 2:1

1 And when I came to you, brethren, I did not come with superiority of speech or of wisdom, proclaiming to you the testimony of God.

1 Corinthians 9:14

14 So also the Lord directed those who proclaim the gospel to get their living from the gospel.

1 Corinthians 11:26

26 For as often as you eat this bread and drink the cup, you proclaim the Lord's death until He comes.