Joel 2:15
Blow the ram’s horn in Zion,
What it says
The ram's horn is to be blown again in Zion to consecrate a fast and summon a sacred assembly.
What it is doing
This verse shifts the trumpet from alarm to gathered repentance.
In context
12“Yet even now,” 13So rend your hearts and not your garments, 14Who knows? He may turn and relent 15Blow the ram’s horn in Zion, 16Gather the people, sanctify the congregation, 17Let the priests who minister before the LORD