BLOWING TRUMPETS OVER THE OFFERING

"Also in the day of your gladness, and in your solemn days, and in the beginnings of your months, ye shall blow with the trumpets over your burnt offerings, and over the sacrifices of your peace offerings; that they may be to you for a memorial before your God: I am the LORD your God." (Numbers 10:10)

While yet in the wilderness, the Lord directed Moses to have Israel make two silver trumpets. They were to be hammered out from a single piece of silver (10:2). These were to  blown by "the sons of Aaron, the priests." They were used for calling the people together in assembly (10:3-4). They were also used to sound the alarm and move the whole encampment of Israel (10:5-8). A third use of these trumpets was in the time of war, when they came against their enemies. When the enemy attacked them they were instructed, "then you shall sound an alarm with the trumpets, that you may be remembered before the LORD your God, and be saved from your enemies" (10:9). The people were thus reminded of the essentiality of these trumpets.
Our text cites a fourth use of these silver trumpets. The priests were to blow them over the burnt offerings and peace offerings. The silver trumpets were to be blown over the "burnt offering," the offering made for sin, when the remembrance of sin was realized, and an appeal to God's mercy was made. They were to be blown over the "peace offering," in which peaceful relations with the Living God was sought to be maintained. These were associated with "the day of your gladness" – a time when the recollection of the acceptance of their sacrifices introduced a note of gladness amidst their wilderness wandering. The trumpets were blown over these offerings "as a reminder on your behalf before the LORD your God." NRSV The idea was not that they would remember God, although they surely would, but that God would be put in mind of them.
The silver trumpets being blown over the burnt offerings and peace offerings foreshadowed a vital aspect of the New Covenant. The pilgrimage of believers through this world to glory is to be noted for an emphasis upon the sacrifice made by Christ Jesus. The trumpets, so to speak, are to be blown, drawing the attention of the heart to the One who took away our sin and made peace with God for us. Jesus spoke of certain hypocrites who sounded the trumpet before them when they gave to the needy (Matt 6:2). Those who are reconciled to God do not draw attention to what they have done, but to what the Lord Jesus has done. They blow the trumpets over the sacrifice, not over their works. They speak of the "wonderful works of God," not of their own. Even as with the priests of old, to blow the trumpets over the offering of Christ, you must be close to it–aware of it, dominated by it. Just as under the Law, when they are blown, God will remember us.