Genesis 12:13

“Say, I pray thee, that thou art my sister, etc.] Which though it was not putting a direct lie into her mouth, she being his sister in some sense, as appears from (<012012>Genesis 20:12) yet it was done to conceal truth, and to deceive the Egyptians, and tended to endanger his wife’s chastity, as well as showed great timorousness in him, and distrust of the divine care and protection of him; and upon the whole it must be criminal in him, and shows that the best of men are liable to sin, and the strongest believer to fall, and that a saint may fail in the exercise of that grace for which he is most eminent, as Abram was for his faith, and yet fell into unbelief, and through that into other…”

“- XXXVIII. Abram in Egypt 15. פרעה par‛oh, Par‘oh, “ouro.” Coptic for “king,” with the masculine article pi. or p. P-ouro, “the king.” If we separate the article p. from the Hebrew form, we have רעה re‛oh for king, which may be compared with רעה ro‛eh, “pastor, leader,” and the Latin rex, king. This is the common title of the Egyptian sovereigns, to which we have the personal name occasionally added, as Pharaoh-Necho, Pharaoh-Hophrah. Genesis 12:10 This first visit of Abram to Mizraim, or Egypt, is occasioned by the famine in the land of promise. This land is watered by periodical rains. A season of drought arrests the progress of vegetation, and brings on a famine. But in Egypt, the…”

“12:13 tell them you are my sister: This request occurs three times in Genesis (see also 20:2; 26:7). The text explains that this was Abram’s usual strategy (20:13), and his son did likewise. This first occasion was outside the land, the second (ch 20) within, showing that God protected his promise in both regions.”