God's Covenant with Noah

91 And God blessed Noah and his sons, and said unto them, Be fruitful, and multiply, and replenish the earth. 2 And the fear of you and the dread of you shall be upon every beast of the earth, and upon every bird of the heavens; With all wherewith the ground teemeth, and all the fishes of the sea, into your hand are they delivered. 3 Every moving thing that liveth shall be food for you; As the green herb have I given you all. 4 But flesh with the life thereof, [which is] the blood thereof, shall ye not eat. 5 And surely your blood, [the blood] of your lives, will I require; At the hand of every beast will I require it. And at the hand of man, even at the hand of every man's brother, will I require the life of man. 6 Whoso sheddeth man's blood, by man shall his blood be shed: For in the image of God made he man. 7 And you, be ye fruitful, and multiply; Bring forth abundantly in the earth, and multiply therein.

Matthew Henry's Commentary on Genesis 9:1-7

Commentary on Genesis 9:1-3

(Read Genesis 9:1-3)

The blessing of God is the cause of our doing well. On him we depend, to him we should be thankful. Let us not forget the advantage and pleasure we have from the labour of beasts, and which their flesh affords. Nor ought we to be less thankful for the security we enjoy from the savage and hurtful beasts, through the fear of man which God has fixed deep in them. We see the fulfilment of this promise every day, and on every side. This grant of the animals for food fully warrants the use of them, but not the abuse of them by gluttony, still less by cruelty. We ought not to pain them needlessly whilst they live, nor when we take away their lives.

Commentary on Genesis 9:4-7

(Read Genesis 9:4-7)

The main reason of forbidding the eating of blood, doubtless was because the shedding of blood in sacrifices was to keep the worshippers in mind of the great atonement; yet it seems intended also to check cruelty, lest men, being used to shed and feed upon the blood of animals, should grow unfeeling to them, and be less shocked at the idea of shedding human blood. Man must not take away his own life. Our lives are God's, and we must only give them up when he pleases. If we in any way hasten our own death, we are accountable to God for it. When God requires the life of a man from him that took it away unjustly, the murderer cannot render that, and therefore must render his own instead. One time or other, in this world or in the next, God will discover murders, and punish those murders which are beyond man's power to punish. But there are those who are ministers of God to protect the innocent, by being a terror to evil-doers, and they must not bear the sword in vain, Romans 13:4. Wilful murder ought always to be punished with death. To this law there is a reason added. Such remains of God's image are still upon fallen man, that he who unjustly kills a man, defaces the image of God, and does dishonour to him.