This now is our King, the dear Lord Jesus Christ, and this is His kingdom and office. It deals not with golden crowns and kingdoms, or with great worldly pomp; no, but when we must die, and cannot retain this life any longer, then it is His office and work to deliver us from sin, death and the power of hell; and through the preaching of the gospel He announces to us that we shall certainly receive this gift or benefit from Him, so that when we are in trouble on account of our sins, or in danger of death, we can comfort ourselves by faith and say: Now help is afforded me through my dear King, Jesus Christ, the Just One and Savior; to this end He came, so lowly and poor, and suffered Himself to be nailed to the cross, that He might justify and sanctify me; in Himself He hath destroyed my sin and death, gives me His own righteousness and victory over death and hell, and gives me also His Holy Spirit, that I might have in my heart a sure seal and witness of His help. See now, whoever believes this as he hears it, and as it is preached in the gospel, he also has it. For to this end holy baptism was instituted by our Savior that He might clothe you with His righteousness, and that His holiness and innocence should be yours. For we are all poor sinners, but in baptism, and afterwards in our whole life, if we turn unto Christ, He comforts us, and says: Give me your sins and take my righteousness and holiness; let your death be taken from you, and put on my life. This is, properly speaking, the Lord Jesus’ government. For all His office and work is this, that He daily takes away our sin and death, and clothes us with His righteousness and life. (Luther’s House Postil, Sermon for the 1^st Sunday in Advent, Volume 1, p. 21)

Hence the Evangelist says, as already mentioned: “Tell ye the daughter of Zion.” And the prophet says: “Rejoice greatly, O daughter of Zion, behold thy King cometh unto thee,” as if he would say: This is told to you and God wishes to have it proclaimed to you, that you may find consolation in Him by faith, and be defended by such faith against doubt and despair on account of your unworthiness and sins. What is it that is told, and on account of which she is to rejoice? It is this: “Behold thy King cometh unto thee.” What kind of a king? A holy and just King, a Physician and Savior, or Helper, who would heal and save you. He would give His glory and righteousness to you, that you may be free from your sins; His life also He would lay down for you, that through His death you may be delivered from eternal death. Therefore be not offended at His lowly and humble form, but thank Him for it, and comfort yourself in Him. For all that He does and accomplishes in His coming, is done for your good; thus He would deliver you from your sins and from death, and justify and save you.  (Luther’s House Postil, Sermon for the 1^st Sunday in Advent, Volume 1, p. 20-21)

Whoever will not receive this with his ears and heart, but would see it with his eyes and feel it with his hands, deprives himself of this King; for it is very different from what we find it with other kings. What they do, they do with pomp, and everything has a grand, imposing appearance. In Christ we do not find this; His office and work is to help us from sin and death, and this He does in no other external manner but through His word and gospel, which He orders to be told and preached to us, and through the signs which He gives besides the promise, through which also He works and shows His power; as that He first plunges us into baptism, where our eyes see nothing but simple water, like other water. Likewise, He has comprehended it in the word we are preaching, where our eyes see nothing but man’s breath. But we must beware and not follow our eyes here, but shut our eyes, open our ears and hear the word. This teaches us how our Lord Jesus shed His blood for the forgiveness of our sins, that we might live. These gifts He would bestow upon us in holy baptism, in the Lord’s Supper, in the preaching and absolution; there we certainly find them. Now it is true, it seems small matter. that through the washing of water, through the word and sacrament, such great things should be accomplished; but do not let your eyes deceive you. There also it seemed a small matter that He who rode on a borrowed ass, and afterwards suffered Himself to be crucified, should take away sin, death and hell. No one could see it in His appearance; but the prophet says so. Therefore we must simply receive it with our ears, and believe it with our hearts; with our eyes we cannot see it. (Luther’s House Postil, Sermon for the 1^st Sunday in Advent, Volume 1, p. 20)