Joel 2:1

II.

(1) Blow ye the trumpet. — The preaching of the prophet increases in its intensity. Behind the locusts, exemplified by them, there is a still more terrible visitation. He sees on the horizon a mustering of the nations hostile to his people, bent on destroying them. Let the priests stir up the people for a fast, and for the defence of their land by the trumpet. The locusts have done their symbolical work, they have left their mark on the country. Now the day of Jehovah, the manifestation of His power, is approaching — it is imminent.