1 Corinthians 7:39

A wife is bound by law for as long as her husband lives; but if the husband is dead, she is free to be married to whoever she desires, only in the Lord.

Romans 7:2-3

For the woman that has a husband is bound by law to the husband while he lives, but if the husband dies, she is discharged from the law of the husband.

1 Corinthians 7:15

Yet if the unbeliever departs, let there be separation. The brother or the sister is not under bondage in such cases, but God has called us in peace.

Genesis 6:2

that God's sons saw that men's daughters were beautiful, and they took for themselves wives of all that they chose.

Deuteronomy 7:3-4

neither shall you make marriages with them; your daughter you shall not give to his son, nor shall you take his daughter for your son.

Malachi 2:11

Judah has dealt treacherously, and an abomination is committed in Israel and in Jerusalem; for Judah has profaned the holiness of Yahweh which he loves, and has married the daughter of a foreign god.

1 Corinthians 7:10

But to the married I command -- not I, but the Lord -- that the wife not leave her husband

2 Corinthians 6:14-16

Don't be unequally yoked with unbelievers, for what fellowship have righteousness and iniquity? Or what fellowship has light with darkness?

Treasury of Scripture Knowledge

Summary

The wife is bound by the law as long as her husband liveth; but if her husband be dead, she is at liberty to be married to whom she will; only in the Lord.

General references

Bible References

Wife

1 Corinthians 7:10
But to the married I command -- not I, but the Lord -- that the wife not leave her husband
Romans 7:2
For the woman that has a husband is bound by law to the husband while he lives, but if the husband dies, she is discharged from the law of the husband.

Only

Genesis 6:2
that God's sons saw that men's daughters were beautiful, and they took for themselves wives of all that they chose.
Deuteronomy 7:3
neither shall you make marriages with them; your daughter you shall not give to his son, nor shall you take his daughter for your son.
Malachi 2:11
Judah has dealt treacherously, and an abomination is committed in Israel and in Jerusalem; for Judah has profaned the holiness of Yahweh which he loves, and has married the daughter of a foreign god.
2 Corinthians 6:14
Don't be unequally yoked with unbelievers, for what fellowship have righteousness and iniquity? Or what fellowship has light with darkness?

General references

Matthew 19:10
His disciples said to him, "If this is the case of the man with his wife, it is not expedient to marry."