Partial truth, regardless of the motivation, is still a lie.
Gen. 20:2-3, 10-12, & 17-18 “And Abraham said of Sarah his wife, She is my sister: and Abimelech king of Gerar sent, and took Sarah. But God came to Abimelech in a dream by night, and said to him, Behold, thou art but a dead man, for the woman which thou hast taken; for she is a man's wife.
And Abimelech said unto Abraham, What sawest thou, that thou hast done this thing? And Abraham said, Because I thought, Surely the fear of God is not in this place; and they will slay me for my wife's sake. And yet indeed she is my sister; she is the daughter of my father, but not the daughter of my mother; and she became my wife.
So Abraham prayed unto God: and God healed Abimelech, and his wife, and his maidservants; and they bare children. For the LORD had fast closed up all the wombs of the house of Abimelech, because of Sarah Abraham's wife.”
LESSON - Here is another Biblical example of the downward spiral of sin. Abraham did not respond Biblically to fear. He told a “half-truth” in order to save his life, or so he thought. His deception almost led to adultery and the destruction of King Abimelech’s lineage. The point to be taken from this story is that it’s never right to do wrong. Any type of deception is not of God. It’s better to find a Biblical solution to your fear and deal with uncomfortable situations than to sacrifice one’s integrity and defame the name of Christ. Be honest ALL THE TIME and even people who don’t care for you will still be forced to respect you because they will know that you are a person of integrity.