Genesis 12:12 Therefore it shall come to pass, when the Egyptians shall see thee, that they shall say, This is his wife: and they will kill me, but they will save thee alive. 13 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.
[Patriarchs & Prophets pp 130] 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 judgments upon the royal household. By this means the monarch learned the truth in the matter, and, indignant at the deception practiced upon him, he reproved Abraham and restored to him his wife, saying, “What is this that thou hast done unto me? ...
Why saidst thou, She is my sister? So I might have taken her to me to wife. Now therefore behold thy wife, take her, and go thy way.” 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.
Exodus 20:16 Thou shalt not bear false witness against thy neighbor.
May The Lord add His blessing to the study of His word. God bless!