Numbers 20:22

The children of Israel said to him, “We will go up by the highway; and if we drink your water, I and my livestock, then I will give its price. Only let me, without doing anything else, pass through on my feet.”

He said, “You shall not pass through.” Edom came out against him with many people, and with a strong hand.

Thus Edom refused to give Israel passage through his border, so Israel turned away from him.

The LORD spoke to Moses and Aaron in Mount Hor, by the border of the land of Edom, saying,

“Aaron shall be gathered to his people; for he shall not enter into the land which I have given to the children of Israel, because you rebelled against my word at the waters of Meribah.

Take Aaron and Eleazar his son, and bring them up to Mount Hor;