Numbers 23:29

Young's Literal Translation 1862

and Balaam saith unto Balak, `Build for me in this `place' seven altars, and make ready for me in this `place' seven bullocks and seven rams;'

See the chapter Copy

and it cometh to pass, in God's helping the Levites bearing the ark of the covenant of Jehovah, that they sacrifice seven bullocks and seven rams.

And Balak taketh Balaam to the top of Peor, which is looking on the front of the wilderness,

and Balak doth as Balaam said, and he offereth a bullock and a ram on an altar.