Source · the work in full

Notes, Critical and Explanatory, on the Holy Scriptures

PD · Francis Patrick Kenrick, Baltimore, 1849–1860 (Gospels 1849; Acts, Epistles & Apocalypse 1851; Psalms, Wisdom books & Canticle 1857; Job & the Prophets 1859; Pentateuch 1860)
Chapter 10

Deuteronomy 10

The death of Aaron took place on Mount Hor, Numb. 20 : 28, 29, which seems not to hare been far from Mosera. The Samaritan text here is conformable to the passage of Numbers. Some mistakes may hare occurred in the text, by means of copyists.

Numbers 8 : 6. The phrase, "at that time," admits some latitude of meaning. H. P. "The Lord." The Lerltes were set apart for the ministry before their departure from Mount Sinai.

You arrive at the cited line; the whole work is yours to read around it. The text is set from the cited public-domain edition.