In my last post, we concluded looking at The Branch of Yishai (Jesse) ~ Part 2 in Yesha’yahu 11:10-16. In this post, we examine A Song of Praise on Yesha’yahu 12:1-6.
As we have previously learned, Yesha’yahu’s name means Adonai is salvation, and salvation is a crucial theme in this song. Then we read that the Lord Yeshua HaMashiach is both our God and our Salvation, the Holy One of Isra’el in the midst of us.
Yesha’yahu concludes chapters 6-12 by foreseeing the day when God’s people will praise Him for the abundant joys of his salvation.
1 On that day you will say: “I thank you, Adonai, because, although you were angry at me, Your anger is now turned away; and You are comforting me.
On that day points to a future date with Isra’el’s regathering and reunion and the righteous reign of the Lord Yeshua HaMashiach. The Jewish remnant will have come through the time of tribulation on earth (known as the trouble of Ya’akov in Jeremiah 30:7), seen their Mashiach, repented, and received Him by faith. Cleansed and established in their promised kingdom, the nation will praise the Lord and worship Him among the Gentiles. In addition to an application to Yesha’yahu’s day, there is also a prophetic application of this passage.
2 “See! God is my salvation. I am confident and unafraid; for Yah Adonai is my strength and my song, and he has become my salvation!”
Yah is a shortened form of the divine name Yahweh, God’s covenant name that He revealed to Moshe at the burning bush (Exodus 3:14-15).
3 Then you will joyfully draw water from the springs of salvation.
In a relatively dry land like Isra’el, water, and the refreshment it brings was an apt image for salvation. The picture of water bubbling up in the spring evokes freshness and abundance.
Jon Courson offers a fascinating insight into this verse: 
“Whoever drinks of that water will thirst again,” Jesus said to the woman at the well (John 4:13). The crazy thing about the water in the world is that it only makes you thirsty. If you draw from the wells of materialism or hedonism, you’ll have to return because you’ll just want more. If you’re thirsty today, don’t go back to the old watering holes. They won’t satisfy you. Come to the Lord and drink again.
4 On that day you will say, “Give thanks to Adonai! Call on His name! Make His deeds known among the peoples declare how exalted is His name.
The praise of God serves as a testimony not just within God’s people, but also to the nations. They were also recipients of God’s blessing through Avraham’s descendants (Genesis 12:1-13). The story of salvation must be told, even beyond the community of Isra’el (Psalms 67:2; 70:4; 98:2).
5 Sing to Adonai, for he has triumphed— this is being made known throughout the earth. 6 Shout and sing for joy, you who live in Tziyon; for the Holy One of Isra’el is with you in his greatness!” ~ Yesha’yahu 12:1-6 (CJB)
This beautiful picture of the kingdom comes to a close with a song of praise, and we enter a new section of the Book of Yesha’yahu. In chapters 13 through 23, we come to a passage called the book of burdens in which judgments are pronounced upon the nine nations surrounding Isra’el and Y’hudah. In my next post, we’ll begin the journey through this section in Yesha’yahu 13 by learning about A Prophecy Against Babylon ~ Part 1 in Yesha’yahu 13 1-9.
 Jon Courson’s Application Commentary Old Testament Volume 2.