King James Bible Dictionary

A meeting of a religious character as distinguished from congregation, which was more general, dealing with political and legal matters. Hence it is called an "holy convocation." Such convocations were the Sabbaths (Leviticus 23:2, 3), the Passover (Exodus 12:16; Leviticus 23:7, 8; Numbers 28:25), Pentecost (Leviticus 23:21), the feast of Trumpets (Leviticus 23:24; Numbers 29:1), the feast of Weeks (Numbers 28:26), and the feast of Tabernacles (Leviticus 23:35, 36). The great fast, the annual day of atonement, was "the holy convocation" (Leviticus 23:27; Numbers 29:7).

This term (with one exception)

(Isaiah 1:13) is applied invariably to meetings of a religious character, in contradistinction to congregation.

CONVOCATION, noun [Latin]

1. The act of calling or assembling by summons.

2. An assembly.

In the first day there shall be a holy convocation Exodus 12:16.

3. In England, an assembly of the clergy, by their representatives, to consult on ecclesiastical affairs. It is held during the session of parliament, and consists of an upper and lower house. In the upper house sit the archbishops and bishops; in the lower house sit the inferior clergy, represented by their proctors, consisting of all the deans and arch-deacons, of one proctor for every chapter, and two for the clergy of every diocese, in all one hundred and forty-three divines, vix. Twenty-two deans, fifty-three arch-deacons, twenty-four prebendaries, and forty-four proctors of the diocesan clergy.

4. An academical assembly, in which the business of the university is transacted.

Three held annually by the Israelites
Acts 3:23
Feasts