Numbers 33:40

And king Arad the Canaanite, which dwelt in the south in the land of Canaan, heard of the coming of the children of Israel.

Cross-reference

Numbers 21:1–3 Historical context

Numbers 21:1-3 expands on the Canaanite king of Arad hearing of Israel's approach, describing the battle and Israel's vow that led to Hormah.