איוב לג:ט מדרש: Otzar Midrashim

The ḤETH in חף אנכי clean am I (Job 33:9) is small. Seven commandments were given before the giving of the Torah, and they are all included in the verse And the LORD Elohim commanded the man, saying: Of every tree of the garden you may freely eat (Genesis 2:17)