John 4:18
for you have had five husbands, and he whom you now have is not your husband: this you have said truly."
Mark 10:12
and, if she herself, having put away her husband, marries another, she commits adultery."
Romans 7:3
So, then, if, while the husband is living, she is married to another man, she shall be called an adulteress; but, if the husband dies, she is free from the law, so that she is no adulteress, though she be joined to another man.
1 Corinthians 7:10-11
And to the married I give command??ot I, but the Lord??hat the wife depart not from her husband;
Hebrews 13:4
Let marriage be held in honor among all, and let the bed be undefiled; for fornicators and adulterers God will judge.