Dwell alone - More properly, dwell apart; that is, separated from the people.

Though thus excluded from general contact with society,…

He shall dwell alone. —In consequence of his extreme defilement, the leper had to live in seclusion outside the camp or c…

All the days wherein the plague [shall be] in him he shall be
defiled
Reckoned an unc…

When the priest had pronounced the leper unclean, it halted his activities in the world, cut him off from his friends and relatives, and ruined all…