Leviticus 23:21-24

Living Bible

²¹ That day shall be announced as a time of sacred convocation of all the people; don’t do any work that day. This is a law to be honored from generation to generation. ²² (When you reap your harvests, you must not thoroughly reap all the corners of the fields, nor pick up the fallen grain; leave it for the poor and for foreigners living among you who have no land of their own; I am Jehovah your God!)

^23-24 “The Festival of Trumpets: Mid-September^[a] is a time for all the people to meet together for worship; it is a time of remembrance, and is to be announced by loud blowing of trumpets.