Hebrews 13:4
Marriage should be honored by all and the marriage bed kept undefiled, for God will judge the sexually immoral and adulterers.
In context
1Continue in brotherly love. 2Do not neglect to show hospitality to strangers, for by so doing some people have entertained angels without knowing it. 3Remember those in prison as if you were bound with them, and those who are mistreated as if you were suffering with them. 4Marriage should be honored by all and the marriage bed kept undefiled, for God will judge the sexually immoral and adulterers.