Holy Convocation
In Hebrew, the word “convocation” means “miqra”, spoken as “Mik-raw” (Strong’s concordance number 4744). In Hebrew, this word means “rehearsal”. What does the word rehearsal mean? Rehearsal is defined as “the act of practicing in preparation for an event”. The term “miqra” also means to “read and understand” the laws of Elohim (God in English).
The word “holy” in Hebrew in this context means “qadash”, spoken as “Kaw-dash” (Strong’s concordance number 6942). In Hebrew, this word means to be set-apart or to be holy/sanctify for God.
We can clearly understand that the word “convocation” is firstly to practise, secondly to read and understand the laws of Elohim. In a nutshell, we can say that the term “convocation” means to set apart an appointed time (Sabbath/Festivals) to Elohim and to read, understand His laws so that you can use His laws in your life (practise them).
(http://www.messianicjews.com.au/articles/details/8/Holy-Convocation-What-does-the-Bible-say-about-Convocation)