2 Corinthians 8:8; 2 Corinthians 8:22; 2 Corinthians 13:5

2 Corinthians 8:8

8 I speak not by commandment, but by occasion of the forwardness of others, and to prove the sincerity of your love.

2 Corinthians 8:22

22 And we have sent with them our brother, whom we have oftentimes proved diligent in many things, but now much more diligent, upon the great confidence which I have in you.

2 Corinthians 13:5

5 Examine yourselves, whether ye be in the faith; prove your own selves. Know ye not your own selves, how that Jesus Christ is in you, except ye be reprobates?