1 Corinthians 3:13; 1 Corinthians 11:28; 1 Corinthians 16:3

1 Corinthians 3:13

13 each man's work will become evident; for the day will show it because it is to be revealed with fire, and the fire itself will test the quality of each man's work.

1 Corinthians 11:28

28 But a man must examine himself, and in so doing he is to eat of the bread and drink of the cup.

1 Corinthians 16:3

3 When I arrive, whomever you may approve, I will send them with letters to carry your gift to Jerusalem;