Albert Barnes Commentary Jeremiah 4:21

"How long shall I see the standard, and hear the sound of the trumpet?" — Jeremiah 4:21 (ASV)

The standard - See Jeremiah 4:6. The alarm caused by the invasion is graphically described. The people are dispersed over the land following their usual pursuits, when news comes of the enemy’s approach. The only chance of escape is a hasty flight. Flags stream from the hills to mark the safest route, while the blasts of the trumpet quicken the steps of the wavering.