101 Now the Lord said to Moses, 2 "Make two trumpets of hammered silver for calling the community to assemble and for signaling the breaking of camp. 3 When both trumpets are blown, everyone must gather before you at the entrance of the Tabernacle. 4 But if only one trumpet is blown, then only the leaders-the heads of the clans of Israel-must present themselves to you. 5 "When you sound the signal to move on, the tribes camped on the east side of the Tabernacle must break camp and move forward. 6 When you sound the signal a second time, the tribes camped on the south will follow. You must sound short blasts as the signal for moving on. 7 But when you call the people to an assembly, blow the trumpets with a different signal. 8 Only the priests, Aaron's descendants, are allowed to blow the trumpets. This is a permanent law for you, to be observed from generation to generation.
Matthew Henry's Commentary on Numbers 10:1-8
Commentary on Numbers 10:1-10
(Read Numbers 10:1-10)
Here are directions concerning the public notices to be given the people by sound of trumpet. Their laws in every case were to be Divine, therefore, even in this matter Moses is directed. These trumpets typify the preached gospel. It sounds an alarm to sinners, calls them to repent, proclaims liberty to the captives and slaves of Satan, and collects the worshippers of God. It directs and encourages their heavenly journey; stirs them up to combat against the world and sin, encouraging them with the assurance of victory. It leads their attention to the sacrifice of Christ, and shows the Lord's presence for their protection. It is also necessary that the gospel trumpet give a distinct sound, according to the persons addressed, or the end proposed; whether to convince, humble, console, exhort, reprove, or teach. The sounding of the trumpet of the gospel is God's ordinance, and demands the attention of all to whom it is sent.