The curved horn of a ram, used as a musical instrument for signaling. Blown at the giving of the Law, the Jubilee, the new year, battle, and in worship. The shophar announced divine events.
The Shofar connects human time with divine action. Its blast at Sinai terrified Israel (Exod 19:16); in Joshua 6 it brought down Jericho's walls; at Rosh Hashanah it calls Israel to repentance.
Paul's 'last trumpet' (1 Cor 15:52) and the trumpets of Revelation stand in the shophar tradition — cosmic, divine announcements that reorganize reality. The Jubilee shophar (Lev 25) proclaimed liberty, which Jesus claimed to fulfill (Luke 4:18).