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

1 Corinthians 2:1

1 And I, brethren, when I came to you, came not with excellency of speech or of wisdom, declaring unto you the testimony of God.

1 Corinthians 9:14

14 Even so hath the Lord ordained that they which preach the gospel should live of the gospel.

1 Corinthians 11:26

26 For as often as ye eat this bread, and drink this cup, ye do shew the Lord's death till he come.