A man of God, i.e. a prophet or preacher sent from God. See 1 Timothy 6:11 2 Timothy 3:17 2 Peter 1:21. Who this was is not revealed by God, and therefore it is vain to inquire, and impossible to determine. Did I plainly appear? did I indeed show such a favor, and appear so evidently and gloriously to thee, and for thee, and is this thy requital? unto the house of thy father, i.e. unto Aaron the chief of thy father's house. When they were in Egypt: see Exodus 4:27. Pharaoh's house, i.e. either,
1. In Pharaoh's land; the whole kingdom being, as it were, one great family, whereof Pharaoh was the master. Or,
2. In Pharaoh's court, where Aaron might probably be at the time of this revelation, either to answer to some accusation against him or his brethren, or to beg some relaxation of the rigour, or for some other occasion.