Sanctify.

Joel 2:15, 16
Blow the trumpet in Zion, consecrate a fast, proclaim a sacred assembly. . . .

2 Chronicles 20:3, 4
Jehoshaphat was alarmed and set his face to seek the LORD. And he proclaimed a fast throughout Judah. . . .

solemn assembly.

Leviticus 23:36
For seven days you are to present an offering made by fire to the LORD. On the eighth day you are to hold a sacred assembly and present an offering made by fire to the LORD. It is a solemn assembly; you are not to do any regular work.

Nehemiah 8:18
Day after day, from the first day to the last, Ezra read from the Book of the Law of God. The Israelites kept the feast for seven days, and on the eighth day they held an assembly, according to the ordinance.

the elders.

Deuteronomy 29:10, 11
All of you are standing today before the LORD your God--you leaders of tribes, elders, officials, and all the men of Israel, . . .

2 Chronicles 20:13
Meanwhile all the men of Judah, with their wives and children and little ones, were standing before the LORD.

Nehemiah 9:2, 3
Those of Israelite descent separated themselves from all the foreigners, and they stood and confessed their sins and the iniquities of their fathers. . . .

cry.

Jonah 3:8
Furthermore, let both man and beast be covered with sackcloth, and have everyone call out earnestly to God. Let each one turn from his evil ways and from the violence in his hands.