ויעשו בני לוי. ולא כל בני לוי: AND THE SONS OF LEVI DID. Not all the sons of Levi.132All the sons of Levi gathered in response to Moses’ call, Whoso is on the Lord’s side, let him come unto me (v. 26). However, they didn’t all participate in the slaying of the worshippers of the calf. Hence, unlike verse 26, which reads, And all the sons of Levi gathered, our verse reads, and the sons of Levi did according to the word of Moses, omitting the word all.