Romans 7:3

So then, of the living husband, she will be called an adulteress if she becomes to another man, but if the husband should die, she is free from the law, for her not to be an adulteress having become to another man.

Matthew 5:32

But I say to you, that whoever may divorce his wife apart from a matter of fornication, disposes her to commit adultery, and whoever may marry her who has been divorced commits adultery.

Exodus 20:14

Thou shall not commit adultery.

Leviticus 20:10

And the man who commits adultery with another man's wife, even he who commits adultery with his neighbor's wife, the adulterer and the adulteress shall surely be put to death.

Numbers 5:13-31

and a man lays with her carnally, and it be hid from the eyes of her husband, and be kept close, and she be defiled, and there be no witness against her, and she is not taken in the act,

Deuteronomy 22:22-24

If a man be found laying with a woman married to a husband, then they shall both of them die, the man that lay with the woman, and the woman. So shall thou put away the evil from Israel.

Ruth 2:13

Then she said, Let me find favor in thy sight, my lord, because thou have comforted me, and because thou have spoken kindly to thy handmaid, though I be not as one of thy handmaidens.

1 Samuel 25:39-42

And when David heard that Nabal was dead, he said, Blessed be LORD, who has pleaded the cause of my reproach from the hand of Nabal, and has kept back his servant from evil, and the evil-doing of Nabal LORD has returned upon his ow

Mark 10:6-12

But from the beginning of creation God made them male and female.

John 8:3-5

And the scholars and the Pharisees bring to him a woman taken in adultery. And having stood her in the midst,

1 Timothy 5:11-14

But refuse younger widows, for when they are sexually aroused, they desire of the Christ to marry,

Treasury of Scripture Knowledge

Summary

So then if, while her husband liveth, she be married to another man, she shall be called an adulteress: but if her husband be dead, she is free from that law; so that she is no adulteress, though she be married to another man.

General references

Bible References

So then

Exodus 20:14
Thou shall not commit adultery.
Leviticus 20:10
And the man who commits adultery with another man's wife, even he who commits adultery with his neighbor's wife, the adulterer and the adulteress shall surely be put to death.
Numbers 5:13
and a man lays with her carnally, and it be hid from the eyes of her husband, and be kept close, and she be defiled, and there be no witness against her, and she is not taken in the act,
Deuteronomy 22:22
If a man be found laying with a woman married to a husband, then they shall both of them die, the man that lay with the woman, and the woman. So shall thou put away the evil from Israel.
Matthew 5:32
But I say to you, that whoever may divorce his wife apart from a matter of fornication, disposes her to commit adultery, and whoever may marry her who has been divorced commits adultery.
Mark 10:6
But from the beginning of creation God made them male and female.
John 8:3
And the scholars and the Pharisees bring to him a woman taken in adultery. And having stood her in the midst,

Though

Ruth 2:13
Then she said, Let me find favor in thy sight, my lord, because thou have comforted me, and because thou have spoken kindly to thy handmaid, though I be not as one of thy handmaidens.
1 Samuel 25:39
And when David heard that Nabal was dead, he said, Blessed be LORD, who has pleaded the cause of my reproach from the hand of Nabal, and has kept back his servant from evil, and the evil-doing of Nabal LORD has returned upon his ow
1 Timothy 5:11
But refuse younger widows, for when they are sexually aroused, they desire of the Christ to marry,

General references

Exodus 20:14
Thou shall not commit adultery.
Mark 10:9
What therefore God has joined together, no man shall separate.