Numbers

Speak unto the children of Israel, saying, In the seventh month, in the first day of the month, shall ye have a sabbath, a memorial of blowing of trumpets, an holy convocation.

Ye shall do no servile work therein: but ye shall offer an offering made by fire unto the Lord.

And the Lord shall be seen over them, and his arrow shall go forth as the lightning: and the Lord God shall blow the trumpet, and shall go with whirlwinds of the south.

And the Lord spake unto Moses, saying,

Also in the day of your gladness, and in your solemn days, and in the beginnings of your months, ye shall blow with the trumpets over your burnt offerings, and over the sacrifices of your peace offerings; that they may be to you for a memorial before your God: I am the Lord your God.