Genesis 28:20-22

Then 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 food to eat and clothing to wear, So that I may come again to my father's house in peace, then the Lord shall be my God; And this stone which I have set up as a pillar (monument) shall be God's house [a sacred place to me], and of all [the increase of possessions] that You give me I will give the tenth to You.