V.1-14 Turn back to Numbers 10, you will see that there were two reasons for blowing the silver trumpets. In verse 9 it was to sound an alarm to the camp. Here in Joel the alarm is to be sounded! There was danger. The enemy was coming. Joel warns the people. Are we getting the warning?
Today God is warning us. We should realize that we are living in very dangerous days. Satan is attacking the believers by deceiving us rather than by frightening us.
V.15-17 Back in Numbers 10:77But when the congregation is to be gathered together, ye shall blow, but ye shall not sound an alarm. (Numbers 10:7) you read of the other blowing of the silver trumpets to call the people together. Here, they were to purify themselves, the priests were to weep because of the badness of their behavior.
Today the Lord is saying the same to all true believers. To separate from all the mixture and confusion around, and to be gathered to the name of the Lord Jesus alone. Christ is the one gathering center, and He is not divided (1 Cor. 1:13). Satan is the one who is separating believers from each other.
V.18-27 What the Lord promised if the two trumpets were obeyed. Do you want to please the Lord? Then are you doing these two things? He will surely make you happy if you do. Notice how much the Lord wants to make His people happy.
V.28-32 Turn to Acts 2:14-2114But Peter, standing up with the eleven, lifted up his voice, and said unto them, Ye men of Judea, and all ye that dwell at Jerusalem, be this known unto you, and hearken to my words: 15For these are not drunken, as ye suppose, seeing it is but the third hour of the day. 16But this is that which was spoken by the prophet Joel; 17And it shall come to pass in the last days, saith God, I will pour out of my Spirit upon all flesh: and your sons and your daughters shall prophesy, and your young men shall see visions, and your old men shall dream dreams: 18And on my servants and on my handmaidens I will pour out in those days of my Spirit; and they shall prophesy: 19And I will show wonders in heaven above, and signs in the earth beneath; blood, and fire, and vapor of smoke: 20The sun shall be turned into darkness, and the moon into blood, before that great and notable day of the Lord come: 21And it shall come to pass, that whosoever shall call on the name of the Lord shall be saved. (Acts 2:14‑21) where Peter repeats these words. They were partly carried out on the day of Pentecost. They will completely come to pass when the Lord comes in His glory (see chart) at the day of the Lord.