Numbers 33:37
“And they removed from Kadesh, and pitched in mount Hor, in the edge of the land of Edom.”
And they departed from Ebronah, and encamped at Ezion–gaber.
And they removed from Ezion–gaber, and pitched in the wilderness of Zin, which is Kadesh.
And they removed from Kadesh, and pitched in mount Hor, in the edge of the land of Edom.
And Aaron the priest went up into mount Hor at the commandment of the Lord, and died there, in the fortieth year after the children of Israel were come out of the land of Egypt, in the first day of the fifth month.
And Aaron was an hundred and twenty and three years old when he died in mount Hor.
Counter-Arguments
The strongest case that this verse does not belong in this theme.

Cross-References
“Then they went along through the wilderness, and compassed the land of Edom, and the land of Moab, and came by the east side of the land of Moab, and pitched on the other side of Arnon, but came not within the border of Moab: for Arnon was the border of Moab.”
“And they journeyed from mount Hor by the way of the Red sea, to compass the land of Edom: and the soul of the people was much discouraged because of the way.”
“And the children of Israel, even the whole congregation, journeyed from Kadesh, and came unto mount Hor.”
“And the Lord spake unto Moses and Aaron in mount Hor, by the coast of the land of Edom, saying,”
“And this shall be your north border: from the great sea ye shall point out for you mount Hor:”