Numbers 20:19-23

Again, the sons of Israel said to him, “We will go up by the road, and if I and my livestock do drink any of your water, then I will pay its price. Let me only pass through on my feet, nothing more.”

But he said, “You shall not pass through.” And Edom came out against him with a heavy force and a strong hand.

So Edom refused to allow Israel to pass through his territory; then Israel turned away from him.

Now when they set out from Kadesh, the sons of Israel, the whole congregation, came to Mount Hor. Death of Aaron

Then the Lord spoke to Moses and Aaron at Mount Hor by the border of the land of Edom, saying,