Mark 10:11
And 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 was also 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 sexual immorality, and marries another, commits adultery."
Romans 7:3
Accordingly, 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 if she marries another man she is not an adulteress.
1 Corinthians 7:4
For the wife does not have authority over her own body, but the husband does. Likewise the husband does not have authority over his own body, but the wife does.
1 Corinthians 7:10-11
To the married I give this charge (not I, but the Lord): 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 sexually immoral and adulterous.