2 Corinthians 13:7-10

7Now 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. 8For we can do nothing against the truth, but for the truth. 9For we rejoice, when we are weak, and ye are strong: this we also pray for, even your perfecting. 10For 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.