“Praise the Lord in song, for He has done excellent things; Let this be known throughout the earth.” (v.5)
The context of today's reading is prophetic, taking place during the millennial reign of Jesus Christ. Isaiah is picturing the coming of the Messiah to redeem His people and establish His glorious reign. Notice the phrase "in that day," repeated at the beginning of each stanza (Isa. 12:1, 4), this is the future period known as the millennial kingdom spoken of in Revelation 20:1, 2, 3, Rev. 20:4, 5, 6, 7.
Therefore, Isaiah writes in the first three verses of our text that the people "the remnant" of Israel will in that day, give Him praise and gratitude for their comfort and salvation. And likewise, "the nations," the Gentiles will also give Him the glory and honor due His name. Then, in that day when Christ sits on His throne, the redeemed of both groups-those who make up His body, the church, will reign with Him.
But we don't have to wait until Christ returns to offer Him the praise He deserves. Praise and adoration of God is the "sacrifice of praise" we are called to give to Him. And, praise is a great way to keep your prayers from falling into the "gimme" mentality. God loves to give, but He also delights to hear our praise. "Sing to the Lord," Isaiah urges (v.5). If your devotions don't include some music along the way, you have a whole new realm of worship open to you.
The Truth: “Through Him then, let us continually offer up a sacrifice of praise to God, that is, the fruit of lips that give thanks to His name.” (Hebrews 13:15)