1 The Lord said to Moses: 2 "Make two trumpets of hammered silver, and use them for calling the community together and for having the camps set out. 3 When both are sounded, the whole community is to assemble before you at the entrance to the tent of meeting. 4 If only one is sounded, the leaders - the heads of the clans of Israel - are to assemble before you. 5 When a trumpet blast is sounded, the tribes camping on the east are to set out. 6 At the sounding of a second blast, the camps on the south are to set out. The blast will be the signal for setting out. 7 To gather the assembly, blow the trumpets, but not with the signal for setting out. 8 "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. 9 When you go into battle in your own land against an enemy who is oppressing you, sound a blast on the trumpets. Then you will be remembered by the Lord your God and rescued from your enemies. 10 Also at your times of rejoicing - your appointed festivals and New Moon feasts - you are to sound the trumpets over your burnt offerings and fellowship offerings, and they will be a memorial for you before your God. I am the Lord your God."