1 Corinthians 7:10

7for I wish all men to be even as I myself [am]; but each has his own gift of God, one indeed thus and one thus.

8And I say to the unmarried and to the widows: it is good for them if they may remain even as I [am];

9and if they do not have continence—let them marry, for it is better to marry than to burn;

10and to the married I announce—not I, but the LORD—do not let a wife separate from a husband:

11but, and if she may separate, let her remain unmarried, or let her be reconciled to the husband, and do not let a husband send a wife away.

12And to the rest I speak—not the LORD—if any brother has an unbelieving wife, and she is pleased to dwell with him, do not let him send her away;

13and a woman who has an unbelieving husband, and he is pleased to dwell with her, do not let her send him away;