Albert Barnes Commentary Jeremiah 51:47

"Therefore, behold, the days come, that I will execute judgment upon the graven images of Babylon; and her whole land shall be confounded; and all her slain shall fall in the midst of her." — Jeremiah 51:47 (ASV)

Therefore - The exiles were to note these things as signs of the approach of God’s visitation.

Confounded - Or, ashamed.