Joel 2:15-16; Joel 2:1

15 Blow the trumpet in Zion, declare a holy fast, call a sacred assembly. 16 Gather the people, consecrate the assembly; bring together the elders, gather the children, those nursing at the breast. Let the bridegroom leave his room and the bride her chamber.
1 Blow the trumpet in Zion; sound the alarm on my holy hill. Let all who live in the land tremble, for the day of the LORD is coming. It is close at hand--