Telling the Truth ...and When It Is Permissible to Be Less Than Honest

 https://www.chabad.org/library/article_cdo/aid/1049008/jewish/Telling-the-Truth-and-When-It-Is-Permissible-to-Be-Less-Than-Honest.htm

One may "change the truth" for reasons of peace.16 We derive this from a conversation between G‑d, Sarah and Abraham in Genesis.17 Sarah said to herself: "After I have withered will I get smooth skin, and my husband is old." When G‑d repeated her comments to Abraham, he said that Sarah had said: "How can I give birth when I am old." As Rashi18 explains, G‑d changed Sarah's words so that Abraham would not realize that Sarah had made a denigrating remark about him.