What was the stipulation God gave Noah about eating meat?
God permitted Noah and his descendants to eat every moving thing, but He stipulated that they must not eat flesh with its life, which is the blood. The blood represents the life of the creature, so consuming blood was forbidden.
Les explains that after the flood, God gave Noah new instructions: every moving thing that lives would be food, just as the green herb was given in Genesis 1. However, God added a stipulation: they could not eat flesh with its life, which is the blood. Les emphasizes that the life is in the blood, and this applies to all living creatures—animals, birds, and humans. The blood is the actual source of life that keeps the creature functioning. Therefore, eating blood was forbidden.
But flesh with the life thereof, which is the blood thereof, shall ye not eat.