'Trumpet' in the Bible

When one trumpet is blown, the elders and the heads of the thousands of the Israelis are to gather to you.

But when you blow the trumpet to assemble the whole congregation, don't use the same sound as you do for sounding an alarm.

At the beginning of the month, during your time of rejoicing at the appointed place, sound the trumpet over your burnt offering, then sacrifice your peace offering, since they are to be your memorial before the LORD your God. I am the LORD your God."