For to this end also did I write, that I might know the proof of you, whether ye were obedient in all things.

I speak not by way of command, but that by the diligence of others, I may prove the sincerity of your love.

Shew therefore to them before the churches the proof of your love and of our boasting on your behalf.

Since ye seek a proof of Christ speaking in me, who is not weak toward you, but powerful among you.

Examine yourselves, whether ye are in the faith: prove yourselves. Do ye not know yourselves? That Jesus Christ is in you? unless ye are reprobates.