Genesis 18:17-19
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17Yahweh said, "Will I hide from Abraham what I do, 18seeing that Abraham has surely become a great and mighty nation, and all the nations of the earth will be blessed in him? 19For I have known him, to the end that he may command his children and his household after him, that they may keep the way of Yahweh, to do righteousness and justice; to the end that Yahweh may bring on Abraham that which he has spoken of him."
Genesis 18:17-19 (WEB)