Mark 10:11
He said to them, "Whoever divorces his wife, and marries another, commits adultery against her.
Luke 16:18
Everyone who divorces his wife, and marries another, commits adultery. He who marries one who is divorced from a husband commits adultery.
Matthew 5:31-32
"It was also said, 'Whoever shall put away his wife, let him give her a writing of divorce,'
Matthew 19:9
I tell you that whoever divorces his wife, except for sexual immorality, and marries another, commits adultery; and he who marries her when she is divorced commits adultery."
Romans 7:3
So then if, while the husband lives, she is joined to another man, she would be called an adulteress. But if the husband dies, she is free from the law, so that she is no adulteress, though she is joined to another man.
1 Corinthians 7:4
The wife doesn't have authority over her own body, but the husband. Likewise also the husband doesn't have authority over his own body, but the wife.
1 Corinthians 7:10-11
But to the married I command -- not I, but the Lord -- that the wife not leave her husband
Hebrews 13:4
Let marriage be held in honor among all, and let the bed be undefiled: but God will judge the sexually immoral and adulterers.