2 Corinthians 13:5-10

Try your own selves, whether ye are in the faith; prove your own selves. Or know ye not as to your own selves, that Jesus Christ is in you? unless indeed ye be reprobate. But I hope that ye shall know that we are not reprobate. Now we pray to God that ye do no evil; not that we may appear approved, but that ye may do that which is honorable, though we be as reprobate. For we can do nothing against the truth, but for the truth. For we rejoice, when we are weak, and ye are strong: this we also pray for, even your perfecting. For this cause I write these things while absent, that I may not when present deal sharply, according to the authority which the Lord gave me for building up, and not for casting down.