1 Corinthians 7:7
For I would that all men were even as I myself. But every man hath his proper gift of God, one after this manner, and another after that.
Note 10 at 1Co 7:7: Paul was single (1Co 9:5). He was advocating celibacy. This was his second time mentioning it this chapter (see also 1Co 7:1), and he gave more reasons why he thought this was good in 1Co 7:25-40. However, in each case, he made it clear that this is not for everyone.