1 Corinthians 7:2

but on account of fornications, let each man have his wife, and each woman have her husband.

Hebrews 12:16

that no one may be a fornicator or unholy person like Esau, who for one meal sold his birthright.

Treasury of Scripture Knowledge

Summary

And Esau was forty years old when he took to wife Judith the daughter of Beeri the Hittite, and Bashemath the daughter of Elon the Hittite:

Bible References

The daughter

1 Corinthians 7:2
but on account of fornications, let each man have his wife, and each woman have her husband.
Hebrews 12:16
that no one may be a fornicator or unholy person like Esau, who for one meal sold his birthright.