It shall be a perpetual statute for your generations throughout all your dwellings, that ye eat neither {f} fat nor blood.

(f) Eating fat was a symbol of carnality, and eating blood signified cruelty.

Wesley's Notes

3:17 All your dwellings - Not only at or near the tabernacle, not only of those beasts which you actually sacrifice, but also in your several dwellings, and of all that kind of beasts. Fat - Was forbidden, To preserve the reverence of the holy rites and sacrifices. That they might be taught hereby to acknowledge God as their Lord, and the Lord of all the creatures, who might reserve what he pleased to himself. To exercise them in obedience to God, and self - denial and mortification of their appetites, even in those things which probably many of them would much desire. Blood - Was forbidden partly to maintain reverence to God and his worship; partly out of opposition to idolaters, who used to drink the blood of their sacrifices; partly with respect to Christ's Blood, thereby manifestly signified. God would not permit the very shadows of this to be used as a common thing. Nor will he allow us, tho' we have the comfort of the atonement made, to assume to ourselves any share in the honour of making it.

Jamieson-Fausset-Brown Bible Commentary

17. ye eat neither fat nor blood-The details given above distinctly define the fat in animals which was not to be eaten, so that all the rest, whatever adhered to other parts, or was intermixed with them, might be used. The prohibition of blood rested on a different foundation, being intended to preserve their reverence for the Messiah, who was to shed His blood as an stoning sacrifice for the sins of the world [Brown].

Matthew Henry's Concise Commentary

3:6-17 Here is a law that they should eat neither fat nor blood. As for the fat, it means the fat of the inwards, the suet. The blood was forbidden for the same reason; because it was God's part of every sacrifice. God would not permit the blood that made atonement to be used as a common thing, Heb 10:29; nor will he allow us, though we have the comfort of the atonement made, to claim for ourselves any share in the honour of making it. This taught the Jews to observe distinction between common and sacred things; it kept them separate from idolaters. It would impress them more deeply with the belief of some important mystery in the shedding of the blood and the burning the fat of their solemn sacrifices. Christ, as the Prince of peace, made peace with the blood of his cross. Through him the believer is reconciled to God; and having the peace of God in his heart, he is disposed to follow peace with all men. May the Lord multiply grace, mercy, and peace, to all who desire to bear the Christian character.