To gather the whole national community, you are to sound the sustained blasts, but not the short blasts.
Blow the shofar in Zion! Sound an alarm on My holy mountain! Let all living in the land tremble— for the day of Adonai is coming— surely it is near!
The sons of Aaron, the kohanim will blow the trumpets. This is to be an eternal ordinance for you as well as for your generations to come.