Deuteronomy 27:5-7

Thomson(i) 5 and build there an altar to the Lord thy God; an altar of stones. Thou shalt not lift up a tool upon it. 6 Of unwrought stones thou shalt build the altar to the Lord thy God, and offer upon it whole burnt offerings to the Lord thy God. 7 Then thou shalt offer there a sacrifice of thanksgiving, and when thou hast eaten, and art filled, and hast rejoiced before the Lord thy God;