101 And the Lord spoke to Moses, saying: 2 "Make two silver trumpets for yourself; you shall make them of hammered work; you shall use them for calling the congregation and for directing the movement of the camps. 3 When they blow both of them, all the congregation shall gather before you at the door of the tabernacle of meeting. 4 But if they blow only one, then the leaders, the heads of the divisions of Israel, shall gather to you. 5 When you sound the advance, the camps that lie on the east side shall then begin their journey. 6 When you sound the advance the second time, then the camps that lie on the south side shall begin their journey; they shall sound the call for them to begin their journeys. 7 And when the assembly is to be gathered together, you shall blow, but not sound the advance. 8 The sons of Aaron, the priests, shall blow the trumpets; and these shall be to you as an ordinance forever throughout your generations.
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.