7:6 But I say this - Concerning your separating for a time and coming together again. Perhaps he refers also to 1Co 7:2.

1 Corinthians 7:6 Parallel Commentaries

The Apostolic Scriptures.
"And I think that I also have the Spirit of God."--1 Cor. vii. 40. We have seen that the apostolate has an extraordinary significance and occupies a unique position. This position is twofold, viz., temporary, with reference to the founding of the first churches, and permanent, with regard to the churches of all ages. The first must necessarily be temporary, for what was then accomplished can not be repeated. A tree can be planted only once; an organism can be born only once; the planting or founding …
Abraham Kuyper—The Work of the Holy Spirit

It Is, Therefore, the Present Necessity that we are to Avoid...
14. It is, therefore, the present necessity that we are to avoid, but yet such as is a hindrance to somewhat of the good things to come; by which necessity the married life is forced to have thought of the things of the world, how to please, the husband the wife or the wife the husband. Not that these separate from the kingdom of God, as there are sins, which are restrained by command, not by counsel, on this account, because it is matter of condemnation not to obey the Lord when He commands: but …
St. Augustine—Of Holy Virginity.

But Lest any Should Think that of Two Works...
19. But lest any should think that of two works, the good and the better, the rewards will be equal, on this account it was necessary to treat against those, who have so interpreted that saying of the Apostle, "But I think that this is good by reason of the present necessity," [2056] as to say that virginity is of use not in order to the kingdom of heaven, but in order to this present time: as though in that eternal life, they, who had chosen this better part, would have nothing more than the rest …
St. Augustine—Of Holy Virginity.