For if I caused you sorrow, who can make me glad except the one I have grieved? [See verse 6].

Therefore, the Lord says [Isa. 52:11], "You people should leave their company [i.e., unbelievers, verse 14] and separate yourselves from them, and do not touch anything unclean [i.e., their evil practices], and I will welcome you."

So, [i.e., because of your enthusiastic response to this need. See verse 10], we urged Titus, who had previously begun [taking up this collection], to help you also complete this favorable work [i.e., by finalizing it].

And we have sent [i.e., are sending] with them our brother [Note: This is a different person from the one mentioned in verse 18], who has often proven his diligence to us in many ways, and is now proving to be even more diligent because of the great confidence he has in you [i.e., confidence in the Corinthians completing their collection for the poor].

So, I thought it necessary to urge the brothers [See verse 3] to visit you ahead of time and arrange beforehand for your previously promised generous gift. Then it will be ready [when I arrive] as a generously given gift and not as something given grudgingly.

But what I am doing, I will continue to do, so that I can cut off the opportunity from those who want an occasion [to receive financial support for themselves because of my example of receiving it]. They want to boast [that they are preaching] on the same terms as I do. [Note: Paul's argument seems to be that one reason for his foregoing financial support was so those "super apostles" in Corinth (see verse 5) would not be able to use his example to wrongfully exact financial support from the church].

I know a man in [fellowship with] Christ who, fourteen years ago, was taken [literally, "snatched"] up to the third heaven. [Note: The first heaven would be where birds fly; the second where the stars are; and the third where God is]. (I do not know whether he was in his physical body or whether it was an "out-of-the-body" experience, but God knows). [Note: Paul is obviously telling about a personal experience. See verse 7].

was [actually] taken up into Paradise. [Note: This is the same as the "third heaven" of the previous verse, and was a place in the presence of God. See Luke 23:43; Rev. 2:7]. There he heard inexpressible words which are not permitted for people to repeat.

For He was weak when He was crucified [i.e., by assuming a human body capable of suffering and death], but [now] He lives by God's power. For we too are weak, [along] with Him [i.e., each of us experiences the frailties of a human body], but by [this same] power from God, we will live with Him to serve you. [Note: The various translations differ widely on how to properly translate this difficult verse].