Mark 10:11
So 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, and he who marries a woman divorced from her husband commits adultery.
Matthew 5:31-32
"It has also been said, 'Whoever divorces his wife, let him give her a certificate of divorce.'
Matthew 19:9
And I say to you, whoever divorces his wife, except for immorality, and marries another woman commits adultery."
Romans 7:3
So then, she will be called an adulteress if she lives with another man while her husband is alive. But if her husband dies, she is free from that law, and though she marries another man, she is not an adulteress.
1 Corinthians 7:4
The wife does not have authority over her own body, but the husband does; and likewise also the husband does not have authority over his own body, but the wife does.
1 Corinthians 7:10-11
To the married I give charge, not I but the Lord, that the wife should not separate from her husband
Hebrews 13:4
Let marriage be held in honor among all, and let the marriage bed be undefiled; for God will judge the immoral and adulterous.