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

1 Corinthians 3:13

13 their work will be shown for what it is, because the Day will bring it to light. It will be revealed with fire, and the fire will test the quality of each person’s work.

1 Corinthians 11:28

28 Everyone ought to examine themselves before they eat of the bread and drink from the cup.

1 Corinthians 16:3

3 Then, when I arrive, I will give letters of introduction to the men you approve and send them with your gift to Jerusalem.