Blow.

Joel 2:1
Blow the trumpet in Zion; sound the alarm on My holy mountain! Let all who dwell in the land tremble, for the Day of the LORD is coming; in fact, it is at hand--

Numbers 10:3
When both are sounded, the whole congregation is to assemble before you at the entrance to the Tent of Meeting.

sanctify.

Joel 1:14
Consecrate a fast; proclaim a solemn assembly! Gather the elders and all the residents of the land to the house of the LORD your God, and cry out to the LORD.

1 Kings 21:9, 12
In the letters she wrote: "Proclaim a fast and give Naboth a seat of honor among the people. . . .

2 Kings 10:20
And Jehu commanded, "Proclaim a solemn assembly for Baal." So they called one.

Jeremiah 36:9
Now in the ninth month of the fifth year of Jehoiakim son of Josiah king of Judah, a fast before the LORD was proclaimed to all the people of Jerusalem and all who had come there from the cities of Judah.