1 Corinthians 7:3-7

Let the husband render unto the wife her due: and likewise also the wife unto the husband. The wife hath not power over her own body, but the husband: and likewise also the husband hath not power over his own body, but the wife. Defraud ye not one the other, except it be by consent for a season, that ye may give yourselves unto prayer, and may be together again, that Satan tempt you not because of your incontinency. But this I say by way of concession, not of commandment. Yet I would that all men were even as I myself. Howbeit each man hath his own gift from God, one after this manner, and another after that.