Deuteronomy 25:5 is the levirate law Naomi alludes to: a brother should marry his brother’s widow. Her hypothetical sons would fulfill this.

In Matthew 22:24, the Sadducees cite the levirate law that Naomi alludes to — a brother must marry his brother's widow to raise offspring.

In Mark 12:19, the same levirate law is quoted — parallel to Naomi's reasoning about sons marrying her daughters-in-law.

In Luke 20:28, the levirate marriage law is cited — matching Naomi's hypothetical scenario of bearing sons to marry her daughters-in-law.

Genesis 38:11 has Judah telling Tamar to wait for his youngest son. Naomi similarly mentions sons as potential levirate husbands, but she has none.

Genesis 38:8 records Judah commanding Onan to perform levirate duty. Naomi’s scenario of sons marrying their brother’s widow mirrors this practice.