At the entering in of the gate, to wit, of the city, out of which they were shut by virtue of God's law, Leviticus 13:46, Leviticus 14:3 either the the dwelling place of the lepers was near the gate, or they were come very near to the gate, for fear of the Syrians.
Related Commentaries of 2 Kings 7:3
2 Kings 7:3
3 And there were four leprous men at the entering in of the gate: and they said one to another, Why sit we here until we die?