The following is my translation of the notes and useful applications for the Old Testament reading of the First Sunday after Epiphany, Isaiah 42:1–9, as they are found in Das Weimarische Bibelwerk (1877). Square brackets indicate my own notes and additions. For the useful applications, I recommend the reader see this very helpful article by Dr. Benjamin T. G. Mayes.
Note: This is the appointed reading from the Lutheran Missal Project.

I. A promise of God the heavenly Father and a prophecy concerning Christ as to what kind of office He will have and how He will carry it out. (v. 1–9)
Annotated Text
1. Behold, this is * My Servant (although Christ, according to His divine nature, is equal to God the Father in essence, power, and honor and also according to His human nature has received divine attributes by virtue of the personal union, nevertheless, for our sake, He has become the servant of God the Father through His humiliation, Philippians 2:7), whom I uphold;1 and (this is) My Elect (the one whom I have chosen for the work of redemption from eternity past), in † whom My soul has good pleasure. I have given Him My Spirit (without any measure, so that He should rest fully on Him, Isaiah 11:2, John 3:34), He will bring forth justice (how a man must become righteous before God and be blessed) among the Gentiles (through the preaching of the Gospel).
* Matthew 12:18
1 Hebrew: “I grasp Him and support Him” (see Exodus 17:12). Thus, in Matthew 12[:18–21] is the meaning only expressed.
† Matthew 3:17, 17:5; 2 Peter 1:17 (Isaiah 49:6)
2. He will not cry out nor call (Christ will not establish a worldly kingdom in which there is much turmoil and unrest, Luke 17:20), and His voice will not be heard in the streets (He will conduct Himself in humility and in the lowly form of a servant, Philippians 2:7).
(Matthew 12:19)
3. The * bruised reed He will not break (He will not further trouble contrite and broken hearts, but much more comfort them and bless them), and the smoldering wick (the little light of weak faith in the one who wants to despair on account of his sins) He will not quench (He will show Himself gentle toward those who labor and are burdened, Matthew 11:28–29, and He will bear with their weaknesses with patience). He will teach to keep the justice (which counts before God) truthfullly1 (He will also instruct those who have become righteous through faith in Him as to how henceforth they ought to serve God the Lord in holiness and righteousness, Luke 1:74–75).
* Matthew 12:20; Psalm 34:19 (Matthew 9:12ff.)
1 Hebrew: “to bring forth to firm conviction” (that is, “perform.” Therefore, it is also given as “unto victory” or “victorious” [εἰς νῖκος] in Matthew 12[:20].
4. He will be neither sullen nor dreadful (Luther: “He will not be harsh or irascible and sour, but rather friendly, gentle, and benevolent”), until He establishes justice on earth;1 and the islands will wait (there will also be far remote Gentile peoples called to His kingdom, who dwell on the islands) for His Law (for the doctrine of the Gospel).
(Jeremiah 23:5; Matthew 12:21)
1 Hebrew: “He will not become distressed (that is, disgruntled, Isaiah 61:3), nor retreat, until He establishes justice in the land (of Israel); thereafter, etc.”
5. Thus says God, the Lord, who created and spread out heaven, who made the earth and its vegetation, who gives breath to the people who are on it and spirit (life) to those who go on it:
6. I, the Lord (God the Father) have called (I have ordained You for this, that You shall carry out the work of redemption) You (My beloved Son, Christ) with righteousness (in such manner that You will render a complete payment to My righteousness, and obtain the perfect righteousness that counts before Me for the human race), and I will grasp You by the hand (as You contend against death, sin, devil, and hell), and I will keep you, and I will have You given as a covenant (as Mediator of the New Testament or Covenant) among the people1 (that You establish and confirm them through Your blood), as Light * to the Gentiles (that You bring not only the Jews but also the Gentiles through the light of the Gospel into the light of the saving knowledge of God and their Savior);
1 The people of Israel (see Romans 9:4, 15:8; Acts 3:25).
* Isaiah 9:2, 49:6, 60:1 (Daniel 9:24; Luke 2:32; Romans 5:19; Romans 8:2ff.)
7. that You shall open the eyes of the blind (those stuck in spiritual blindness), and lead the prisoners from the prison (that You redeem them from the curse of the Law, as well as death and eternal condemnation) and those who * sit in darkness (who lack the true knowledge of God in Christ), from the prison (in which no light lightens or shines).
* Matthew 4:16 (Isaiah 35:5, 61:1; Luke 1:79; Acts 26:18)
8. * I am the Lord (who alone am the only true self-subsisting God), that is My (proper) name; † and I will give My honor to no other (false god), nor My praise to idols.
* Exodus 3:15
† Isaiah 48:11 (Exodus 6:3; Psalm 83:19)
9. Behold what shall come I proclaim to you beforehand,1 and I proclaim new things (of which no one could have surmised); before they come up (spring forth and flourish), I let you hear of them (Here, the promise properly speaking is to be understood of the coming of the Messiah, who in the prophet Zechariah 6:12 is called “Zemah,” that is, a “Branch”).
(Isaiah 41:26)
1 Hebrew: “Behold, the first things (which I had previously allowed to be spoken, e.g., the conquest of Canaan, the kings of Israel, etc.) have come, and what is new (that is, what has not yet come), etc.” See Isaiah 43:19.
Useful Applications
I. COMFORT: That all repentant, troubled, and broken hearts (who are like a bruised reed and a smoldering wick) ought to be raised up, comforted, and made joyful by their Savior Christ from His holy Word. (v. 3–4)