Prepare — These seem to be the words of God calling them to this work. Arise — This shews how ready they will be to obey God's call. The day goeth — We delay, and tarry too long, and the day spends apace. The shadows — They were so eagerly set upon it, that they watched the lengthening of the shadow, which shews the approach of the evening.
Related Commentaries of Jeremiah 6:4
Jeremiah 6:4
4 Prepare ye war against her; arise, and let us go up at noon. Woe unto us! for the day goeth away, for the shadows of the evening are stretched out.