TSK
Treasury of Scripture Knowledge references in WEB.
The Nephilim were in the earth in those days, and also after that, when God's sons came in to men's daughters. They bore children to them. Those were the mighty men who were of old, men of renown.
He went in to Hagar, and she conceived. When she saw that she had conceived, her mistress was despised in her eyes.
Judah said to Onan, "Go in to your brother's wife, and perform the duty of a husband's brother to her, and raise up seed to your brother."
If brothers dwell together, and one of them die, and have no son, the wife of the dead shall not be married outside to a stranger: her husband's brother shall go in to her, and take her to him as wife, and perform the duty of a husband's brother to her.
For he didn't know what to say, for they were very afraid.