During his stay in Egypt, Abraham gave evidence that he was not free from human weakness and imperfection. In concealing the fact that Sarah was his wife, he betrayed a distrust of the divine care, a lack of that lofty faith and courage so often and nobly exemplified in his life. Sarah was fair to look upon, and he doubted not that the dusky Egyptians would covet the beautiful stranger, and that in order to secure her, they would not scruple to slay her husband. He reasoned that he was not guilty of falsehood in representing Sarah as his sister, for she was the daughter of his father, though not of his mother. But this concealment of the real relation between them was deception. No deviation from strict integrity can meet God's approval. Through Abraham's lack of faith, Sarah was placed in great peril. The king of Egypt, being informed of her beauty, caused her to be taken to his palace, intending to make her his wife. But the Lord, in His great mercy, protected Sarah by sending judgme…
"Say, I pray thee, thou art my sister: that it may be well with me for thy sake; and my soul shall live because of thee."
The EGW passage directly discusses Abraham's actions in Genesis 12:13 and interprets them as a lack of faith and a deception. It draws a direct principle about integrity from the biblical narrative.
Abraham had been greatly favored by the king; even now Pharaoh would permit no harm to be done him or his company, but ordered a guard to conduct them in safety out of his dominions. At this time laws were made prohibiting the Egyptians from intercourse with foreign shepherds in any such familiarity as eating or drinking with them. Pharaoh's dismissal of Abraham was kind and generous; but he bade him leave Egypt, for he dared not permit him to remain. He had ignorantly been about to do him a serious injury, but God had interposed, and saved the monarch from committing so great a sin. Pharaoh saw in this stranger a man whom the God of heaven honored, and he feared to have in his kingdom one who was so evidently under divine favor. Should Abraham remain in Egypt, his increasing wealth and honor would be likely to excite the envy or covetousness of the Egyptians, and some injury might be done him, for which the monarch would be held responsible, and which might again bring judgments upon …
"And Pharaoh commanded his men concerning him: and they sent him away, and his wife, and all that he had."
EGW's description of Pharaoh sending Abraham away with his wife and possessions directly parallels the account in Genesis 12:20. While not a direct quote, the events are the same.