The phrase "is set apart" can be stated in active form. Alternate translation: "Like the great number of sheep that the people set apart for sacrifices or bring to Jerusalem for the appointed feasts" (See: [[rc://en/ta/man/jit/figs-activepassive]])
This speaks of the people of Israel as if they were a flock of sheep. This can be stated in active form. Alternate translation: "so will the great number of people be who will be living in the cities that are now ruined but the people will rebuild" (See: [[rc://en/ta/man/jit/figs-metaphor]] and [[rc://en/ta/man/jit/figs-activepassive]])