1 Corinthians 1:17; 1 Corinthians 9:16; 1 Corinthians 9:18; 1 Corinthians 15:1; 1 Corinthians 15:2

1 Corinthians 1:17

17 For Christ did not send me to baptize, but to preach the gospel—not with wisdom and eloquence, lest the cross of Christ be emptied of its power.

1 Corinthians 9:16

16 For when I preach the gospel, I cannot boast, since I am compelled to preach. Woe to me if I do not preach the gospel!

1 Corinthians 9:18

18 What then is my reward? Just this: that in preaching the gospel I may offer it free of charge, and so not make full use of my rights as a preacher of the gospel.

1 Corinthians 15:1

1 Now, brothers and sisters, I want to remind you of the gospel I preached to you, which you received and on which you have taken your stand.

1 Corinthians 15:2

2 By this gospel you are saved, if you hold firmly to the word I preached to you. Otherwise, you have believed in vain.