Exodus 24:4-6

Complete Jewish Bible

⁴ Moshe wrote down all the words of Adonai. He rose early in the morning, built an altar at the base of the mountain and set upright twelve large stones to represent the twelve tribes of Isra’el. ⁵ He sent the young men of the people of Isra’el to offer burnt offerings and sacrifice peace offerings of oxen to Adonai. ⁶ Moshe took half of the blood and put it in basins; the other half of the blood he splashed against the altar.