“And our livestock are to go with us too, not a hoof is to be left behind, for we have to take some of them to serve יהוה our Elohim, and we ourselves do not know with what we are to serve יהוה until we come there.”
And He said, “Because I am with you. And this is to you the sign that I have sent you: When you have brought the people out of Mitsrayim, you are to serve Elohim on this mountain.”