Genesis 28:20-22
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20Then Jacob made a vow, saying, "If God will be with me, and will keep me in this way that I go, and will give me bread to eat and clothing to wear, 21so that I come again to my father's house in peace, then the LORD shall be my God, 22and this stone, which I have set up for a pillar, shall be God's house; and of all that thou givest me I will give the tenth to thee."
Genesis 28:20-22 (RSV)