Let this, then, be the sum of this article that the little word Lord signifies simply as much as Redeemer, i.e., He who has brought us from Satan to God, from death to life, from sin to righteousness, and who preserves us in the same. But all the points which follow in order in this article serve no other end than to explain and express this redemption, how and whereby it was accomplished, that is, how much it cost Him, and what He spent and risked that He might win us and bring us under His dominion, namely, that He became man, conceived and born without sin, of the Holy Ghost and of the Virgin Mary, that He might overcome sin; moreover, that He suffered, died and was buried, that He might make satisfaction for me and pay what I owe, not with silver nor gold, but with His own precious blood. And all this, in order to become my Lord; for He did none of these for Himself, nor had He any need of it.
Martin Luther, The Large Catechism, The Apostles Creed, Article II, Paragraph 31
[Emphasis added]