1 Corinthians 7:2, 28, 36, 39

But because of [the temptation to participate in] sexual immorality, let each man have his own wife, and let each woman have her own husband.

But if you do marry, you have not sinned [in doing so]; and if a virgin marries, she has not sinned [in doing so]. Yet those [who marry] will have troubles (special challenges) in this life, and I am trying to spare you that.

But if any man thinks that he is not acting properly and honorably toward his virgin daughter, [by not permitting her to marry], if she is past her youth, and it must be so, let him do as he wishes, he does not sin; let her marry.

A wife is bound [to her husband by law] as long as he lives. But if her husband dies, she is free to marry whomever she wishes, only [provided that he too is] in the Lord.