A shofar () is a horn, traditionally that of a ram, used for Jewish religious purposes. Shofar-blowing is incorporated in synagogue services on Rosh Hashanah and Yom Kippur.
Shofar come in a variety of sizes.
Bible and rabbinic literature
The shofar is mentioned frequently in the Hebrew Bible, the Talmud and rabbinic literature. The blast of a shofar emanating from the thick cloud on Mount Sinai made the Israelites tremble in awe (Exodus 19:16).
The shofar was used to announce holidays (Ps. lxxxi. 4), and the Jubilee year (Lev. 25:9). The first day of the seventh month (Tishri) is ...