Leviticus 21:7-9 (KJV)
7 They shall not take a wife that is a whore, or profane; neither shall they take a woman put away from her husband: for he is holy unto his God.
8 Thou shalt sanctify him therefore; for he offereth the bread of thy God: he shall be holy unto thee: for I the Lord, which sanctify you, am holy.
9 And the daughter of any priest, if she profane herself by playing the whore, she profaneth her father: she shall be burnt with fire.
Leviticus 21
Playing The Whore
To be sexually active before marriage is called fornication. This is playing the whore in our promiscuity, which God hates.