wife.

1 Corinthians 7:10, 15
To the married I give this command (not I, but the Lord): A wife must not separate from her husband. . . .

Romans 7:2, 3
For instance, a married woman is bound by law to her husband as long as he lives. But if her husband dies, she is released from the law of marriage. . . .

only.

Genesis 6:2
the sons of God saw that the daughters of men were beautiful, and they took as wives whomever they chose.

Deuteronomy 7:3, 4
Do not intermarry with them. Do not give your daughters to their sons or take their daughters for your sons, . . .

Malachi 2:11
Judah has broken faith; an abomination has been committed in Israel and in Jerusalem. For Judah has profaned the LORD's beloved sanctuary by marrying the daughter of a foreign god.

2 Corinthians 6:14-16
Do not be unequally yoked with unbelievers. For what partnership can righteousness have with wickedness? Or what fellowship does light have with darkness? . . .