John 4:18
For thou hast had five husbands; and he whom thou now hast is not thy husband; in this thou hast spoken truly.
Mark 10:12
And if she put away her husband, and be married to another, she committeth adultery.
Romans 7:3
So then, if while her husband is living she connect herself with another man, she will be called an adulteress; but if her husband die, she is no longer bound by that law, so that she will not be an adulteress, though she connect herself with another man.
1 Corinthians 7:10-11
But to those who are married it is my command, yet not mine, but the Lords: Let not the wife separate herself from her husband,
Hebrews 13:4
Let marriage be honored in all respects, and the bed be undefiled; but whoremongers and adulterers God will judge.