With trumpets and the sound of the ram's horn, Make a joyful symphony before the Lord, the King! Psalm 98:6 Blow the trumpet in Zion, declare a holy fast, call a sacred assembly. Joel 2:15 And he will send his angels with a loud trumpet call, and they will gather his elect Matt. 24:30 The trumpet is a symbol of the call to worship, the resurrection, and the Last Judgment. Trumpets continued to be called ram's horns long after they began to be made of metal.