When the congregation is to be assembled, you shall blow [the trumpets in short, sharp tones], but not the blast of an alarm.
BLOW THE trumpet in Zion; sound an alarm on My holy Mount [Zion]. Let all the inhabitants of the land tremble, for the day of [the judgment of] the Lord is coming; it is close at hand–[Ezek. 7:2-4; Amos 5:16-20.]
And the sons of Aaron, the priests, shall blow the trumpets, and the trumpets shall be to you for a perpetual statute throughout your generations.