Gen 26:9

וַיִּקְרָ֨א אֲבִימֶ֜לֶךְ לְיִצְחָ֗ק וַיֹּ֨אמֶר֙ אַ֣ךְ הִנֵּ֤ה אִשְׁתְּךָ֙ הִ֔וא וְאֵ֥יךְ אָמַ֖רְתָּ אֲחֹ֣תִי הִ֑וא וַיֹּ֤אמֶר אֵלָיו֙ יִצְחָ֔ק כִּ֣י אָמַ֔רְתִּי פֶּן־אָמ֖וּת עָלֶֽיהָ׃

Abimelech sent for Isaac and said, “So she is really your wife! How could you say, ‘She is my sister’?” Isaac replied, “Because I thought I might die on account of her.”