V.4 “A new song” — see Rev. 5:9,9And they sung a new song, saying, Thou art worthy to take the book, and to open the seals thereof: for thou wast slain, and hast redeemed us to God by thy blood out of every kindred, and tongue, and people, and nation; (Revelation 5:9) this will be our song. It is His earthly, believing people that are being spoken of here. The Lord will use them to put down the wicked, and all the enemies of the Lord. But today, we can rejoice to know that we are His heavenly people. It is not our responsibility to cut off the wicked, but to tell them of God’s offer of forgiveness; to wait for the Lord to call us away; then He will judge the wicked who refused to accept Him.
Psalm 150
All believers today have the joy and privilege of praising our blessed Lord in His sanctuary, and soon we shall praise Him up there in heaven, His firmament.