John Gill Commentary Jeremiah 44:6

"Wherefore my wrath and mine anger was poured forth, and was kindled in the cities of Judah and in the streets of Jerusalem; and they are wasted and desolate, as it is this day." — Jeremiah 44:6 (ASV)

Wherefore my fury and my anger was poured forth. Like melted metal, scalding lead, liquefied pitch, or anything of a bituminous and sulphurous nature, which spreads, is consuming, and very intolerable; see (Jeremiah 42:18).

And was kindled in the cities of Judah, and in the streets of Jerusalem; which, like a fire, burnt up and destroyed these cities, and particularly the large and spacious city of Jerusalem.

And they are wasted and desolate, as they are today; now lie in ruins, as may be seen by everyone; the thing is notorious; this is their present case; they are become desolate, and so continue.