But when the people are to be gathered together, the sound of the trumpets shall be simple, and the sounds shall not be separated
Other versions
King James Version
But when the congregation is to be gathered together, ye shall blow, but ye shall not sound an alarm.English Standard Version
But when the assembly is to be gathered together, you shall blow a long blast, but you shall not sound an alarm.New International Version
To gather the assembly, blow the trumpets, but not with the same signal.