...and this stone, which I have set up for a pillar, shall be God's house. And of all that you give me I will give a full tenth to you.
Genesis 28:22

Jacob set a single stone at Luz because he was still one man. Ultimately, the twelve tribes and two kingdoms of Israel are only one people.

Everything that we have is ultimately from God alone. There is nothing in the world that we can earn or take that doesn't already belong to him.