Deuteronomy 22:30

A man shall not take his father’s wife, nor discover his father’s skirt.

Cross-reference

Deuteronomy 27:20 repeats the same prohibition and adds a curse on anyone who lies with his father's wife.

Leviticus 18:8 states the same prohibition, calling it uncovering your father's nakedness.

Leviticus 20:11 prescribes the death penalty for the same sin, adding judicial consequence to the prohibition.

1 Corinthians 5:1 reports a man having his father's wife, directly applying the OT prohibition to a church situation.

1 Corinthians 5:13 commands to purge the evil person, applying the OT principle of removing sin to the incest case.