Jerusalem-Patriarch Prophet Elijah in the midst of crowds plays the shofar for all humanity

So David and all the house of Israel brought up the ark of the LORD with shouting, and with the sound of the trumpet. 2 Samuel 6:15

The Ministry of Patriarch Prophet Elijah in the world:
Praise The Lord Jesus Christ

The Torah was given to Israel with the sound of the Shofar from heaven. 

 And when the voice of the trumpet sounded long, and waxed louder and louder, Moses spake, and God answered him by a voice. Exodus 19:19

The Shofar was used to accompany other musical instruments during  temple ceremonies in Jerusalem and in praise and worship. 

With trumpets and sound of cornet make a joyful noise before the LORD, the King. Psalm 98:6

Praise him with the sound of the trumpet: praise him with the psaltery and harp. Praise him with the timbrel and dance: praise him with stringed instruments and organs. Praise him upon the loud cymbals: praise him upon the high sounding cymbals. Let every thing that hath breath praise the LORD. Praise ye the LORD. Psalm 150:3-6

Jerusalem Patriarch Elijah playing the Shofar

The trumpet was blown to announce the beginning of the festivals.

 

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. Numbers 10:10