Ruth 1:12
Turn again, my daughters, go your way; for I am too old to have an husband. If I should say, I have hope, if I should have an husband also to night, and should also bear sons;
Cross-reference
Deuteronomy 25:5
Allusion
In Deuteronomy 25:5, the levirate law is given — the very principle behind Naomi's reasoning about brothers marrying widows.
Luke 20:28
Parallel
In Luke 20:28 again, the levirate law is quoted — parallel to Naomi's hypothetical of bearing sons to marry her daughters-in-law.