Joel 2:15 KJV
Blow the trumpet in Zion, sanctify a fast, call a solemn assembly:
Joel 2:15, King James Version
In context
14 Who knoweth if he will return and repent, and leave a blessing behind him; even a meat offering and a drink offering unto the Lord your God?
15 Blow the trumpet in Zion, sanctify a fast, call a solemn assembly:
16 Gather the people, sanctify the congregation, assemble the elders, gather the children, and those that suck the breasts: let the bridegroom go forth of his chamber, and the bride out of her closet.