"And it shall be to you for a keeping": What is the intent of this? It is written (Ibid. 12:21) "Draw forth and take for yourselves sheep, etc." Israel said to Moses (Ibid. 8:22) "Will we slaughter the abomination of Egypt before their eyes and they (the Egyptians) not kill us?" He said to them: From the miracle that He will perform for you in your drawing them forth (i.e., their not protesting), you can rest assured (that no ill will befall you) in slaughtering them.