This is the third time I am coming to you. In the mouth of two or three witnesses shall every word be established.
I am coming this third time — He had been coming twice before, though he did not actually come.
 I told you before, and foretell you, as if I were present, the second time; and being absent now I write to them which heretofore have sinned, and to all other, that, if I come again, I will not spare:
All the rest — Who have since then sinned in any of these kinds.
I will not spare — I will severely punish them.
 For though he was crucified through weakness, yet he liveth by the power of God. For we also are weak in him, but we shall live with him by the power of God toward you.
He was crucified through weakness — Through the impotence of human nature.
We also are weak with him — We appear weak and despicable by partaking of the same sufferings for his sake.
But we shall live with him — Being raised from the dead.
By the power of God in you — By that divine energy which is now in every believer, 2 Corinthians 13:5.
 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?
Prove yourselves — Whether ye are such as can, or such as cannot, bear the test - This is the proper meaning of the word which we translate, reprobates. Know ye not yourselves, that Jesus Christ is in you - All Christian believers know this, by the witness and by the fruit of his Spirit. Some translate the words, Jesus Christ is among you; that is, in the church of Corinth; and understand them of the miraculous gifts and the power of Christ which attended the censures of the apostle.
 But I trust that ye shall know that we are not reprobates.
And I trust ye shall know — By proving yourselves, not by putting my authority to the proof.
 Now I pray to God that ye do no evil; not that we should appear approved, but that ye should do that which is honest, though we be as reprobates.
I pray God that ye may do no evil — To give me occasion of showing my apostolical power. I do not desire to appear approved - By miraculously punishing you.
But that ye may do that which is good, though we should be as reprobates — Having no occasion to give that proof of our apostleship.
 For we can do nothing against the truth, but for the truth.
For we can do nothing against the truth — Neither against that which is just and right, nor against those who walk according to the truth of the gospel.
 For we are glad, when we are weak, and ye are strong: and this also we wish, even your perfection.
For we rejoice when we are weak — When we appear so, having no occasion to show our apostolic power.
And this we wish, even your perfection — In the faith that worketh by love.
 Finally, brethren, farewell. Be perfect, be of good comfort, be of one mind, live in peace; and the God of love and peace shall be with you.
Be perfect — Aspire to the highest degree of holiness.
Be of good comfort — Filled with divine consolation.
Be of one mind — Desire, labour, pray for it, to the utmost degree that is possible.
 All the saints salute you.
The grace — Or favour.
Of our Lord Jesus Christ — By which alone we can come to the Father.
And the love of God — Manifested to you, and abiding in you.
And the communion — Or fellowship.
Of the Holy Ghost — In all his gifts and graces. It is with great reason that this comprehensive and instructive blessing is pronounced at the close of our solemn assemblies; and it is a very indecent thing to see so many quitting them, or getting into postures of remove, before this short sentence can be ended. How often have we heard this awful benediction pronounced! Let us study it more and more, that we may value it proportionably; that we may either deliver or receive it with a becoming reverence, with eyes and hearts lifted up to God, "who giveth the blessing out of Sion, and life for evermore."