Joel 2:15 in the King James Version
Blow the trumpet in Zion, sanctify a fast, call a solemn assembly:
Context
14 Who knows? He may turn and relent, and leave a blessing behind him, even a meal offering and a drink offering to the LORD, your God.
15 Blow the trumpet in Zion! Sanctify a fast. Call a solemn assembly.
16 Gather the people. Sanctify the assembly. Assemble the elders. Gather the children, and those who nurse from breasts. Let the bridegroom go out of his room, and the bride out of her chamber.