Take the fat from the ram, the fat tail, the fat covering the entrails, the lobe of the liver, both kidneys with the fat on them, and the right thigh (since this is a ram for ordination),
The ceremonies for consecrating Aaron and his sons had to be set down in detail so that they themselves would grasp the weight of what God called them to, and the people would learn to honor the office and keep their hands off it. The Hebrew word for consecrating means filling the hand, which tells us ministers have their hands full, no time for trifling, their work is so great and constant.
AI summary
Commenting on Exodus 29:1-37
Also thou shalt take of the ram the fat and the rump,.... The fat which was upon it: the sheep in Arabia and about Judea were remarkable for their large tails; according to Rauwolff (z), they were half a span thick, and one and a half broad, and very fat; and so in Africa and Egypt were rams of large tails often and twenty pounds...
Also thou shalt take of the ram the fat and the rump, and the fat that covereth the inwards, and the caul [above] the liver, and the two kidneys, and the fat that [is] upon them, and the right shoulder; for it [is] a ram of consecration: (g) Which is offered for the consecration of the high priest.