14. These be the heads. The object of Moses here is to testify to all ages the origin of his race, that none may doubt that, in the free departure of the people, the promise given to Abraham was completed. For if the Israelites had gone forth under any other leader, there might have been some question as to the chief author of it; now, since Moses was chosen from that family, and from the posterity of Abraham, it more dearly appears that the whole matter was effected under the guidance of God. But although he enumerates not only the tribe of Levi, but begins with Reuben the first-born, and then subjoins Simeon, still it is easily seen that he especially refers to the tribe of Levi; yet, because the families of Reuben and Simeon came first in order, he fitly proceeds from them to the third. He does not, however, recount the others at present, because a more favorable opportunity would occur hereafter. This, then, is the point to be observed, that the minister of their deliverance, by whose hand God would ratify the truth of His promise, was chosen from the race of Abraham. And certainly we see how Satan in opposition has obscured, through profane writers, this memorable history with many fables, and especially when he cunningly endeavors to bury the race of Abraham. Moses, by divine wisdom, anticipates this subtlety, mentioning the heads of the families by name, lest there should be any obscurity about the origin of the nation.