John 4:18
you have had five husbands, and he whom you have now espoused is not your husband. That was a true word."
Mark 10:12
and she is an adulteress if she divorces her husband and marries another man."
Romans 7:3
Accordingly, she will be termed an adulteress if she becomes another man's while her husband is alive; but if her husband dies, she is freed from the law of 'the husband,' so that she is no adulteress if she becomes another man's.
1 Corinthians 7:10-11
For married people these are my instructions (and they are the Lord's, not mine). A wife is not to separate from her husband ??11 if she has separated, she must either remain single or be reconciled to him ??and a husband must not put away his wife.
Hebrews 13:4
Let marriage be held in honour by all, and keep the marriage-bed unstained. God will punish the vicious and adulterous.