Numbers 23:29

Good News Translation (US Version)

Balaam said to him, “Build seven altars for me here and bring me seven bulls and seven rams.”

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So he took Balaam to the top of Mount Peor overlooking the desert.

Balak did as he was told, and offered a bull and a ram on each altar.

They sacrificed seven bulls and seven sheep, to make sure that God would help the Levites who were carrying the Covenant Box.