Charles H. Spurgeon on Psalms 105:21

He was received into the Royal Society of the right honourable the king's privy councillors, and was constituted as Chairman of the council table, which, though Moses doth not express, yet David intimates in Ps 105:21,22. All the privy councillors, as well as the private people were bound (possibly by oath) to obey him in all things, and, as out of the chair, he magisterially taught these senators wisdom. Thus the Hebrew reading runs: He bound the princes to his soul (or according to his will) and made wise his elders; teaching them not only civil and moral, but also divine wisdom, for which cause God sent Joseph (saith he) into Egypt, that some sound of the redemption of fallen mankind might be heard in that kingdom, at that time the most flourishing in the world: neither is Moses altogether silent herein, for he calls him a master of wisdom, or father to Pharaoh (Ge 45:8). Much more to his councillors, and he says that no hand or foot shall move (to wit, in affairs of state, at home, or, in foreign embassies, abroad) without Joseph's order; he was the king's plenipotentiary, Ge 41:44. Christopher Ness.