When both are sounded, the whole community is to assemble before you at the entrance to the Tent of Meeting.
If only one is sounded, the leaders1--the heads of the clans of Israel--are to assemble before you.
References for Numbers 10:4
When a trumpet blast is sounded, the tribes camping on the east are to set out.2
References for Numbers 10:5
At the sounding of a second blast, the camps on the south are to set out.3 The blast will be the signal for setting out.
References for Numbers 10:6
To gather the assembly, blow the trumpets,4 but not with the same signal.5
References for Numbers 10:7
"The sons of Aaron, the priests, are to blow the trumpets. This is to be a lasting ordinance for you and the generations to come.6
References for Numbers 10:8
When you go into battle in your own land against an enemy who is oppressing you,7 sound a blast on the trumpets.8 Then you will be remembered9 by the LORD your God and rescued from your enemies.10
References for Numbers 10:9
Also at your times of rejoicing--your appointed feasts and New Moon festivals11--you are to sound the trumpets12 over your burnt offerings13 and fellowship offerings,14 and they will be a memorial for you before your God. I am the LORD your God.15"
References for Numbers 10:10