The various application of the pronoun they by interpreters makes them aa much divided in the sense of this as of the former verse. Either the Jews that made conscience of keeping to the law against touching dead bodies cried to the other Jews to leave the city as themselves did, the city being now so full of dead bodies that they could not stay in it without polluting themselves; or the priests called to them to that purpose; or their enemies spake in that language to them. For their enemies had resolved they should not stay in Jerusalem.
Related Commentaries of Lamentations 4:15
Lamentations 4:15
15 They cried unto them, Depart ye; it is unclean; depart, depart, touch not: when they fled away and wandered, they said among the heathen, They shall no more sojourn there.