C. F. Keil and Franz Delitzsch on 2 Samuel 12:5-6

2Sa 12:5-6

David was so enraged at this act of violence on the part of the rich man, that in the heat of his anger he pronounced this sentence at once: “As the Lord liveth, the man who did this deserves to die; and the lamb he shall restore fourfold.” The fourfold restoration corresponds to the law in Exo 22:1. The culprit himself was also to be put to death, because the forcible robbery of a poor man’s pet-lamb was almost as bad as man-stealing.