Charles Ellicott Commentary Jeremiah 44:2

"Thus saith Jehovah of hosts, the God of Israel: Ye have seen all the evil that I have brought upon Jerusalem, and upon all the cities of Judah; and, behold, this day they are a desolation, and no man dwelleth therein," — Jeremiah 44:2 (ASV)

Ye have seen ... —The prophet begins, naturally enough, with an appeal to the personal experience of his hearers. Was not that enough to show them that the source of all their evils had been their falling away from the faith or worship of their fathers?