10 The Son of God then is Lord: He is Lord, who was born in Bethlehem of Judæa, according to the Angel who said to the shepherds, I bring you good tidings of great joy, that unto you is born this day in the city of David Christ the Lord: of whom an Apostle says elsewhere, The word which God sent unto the children of Israel, preaching the gospel of peace by Jesus Christ: He is Lord of all. But when he says, of all, do thou except nothing from His Lordship: for whether Angels, or Archangels, or principalities, or powers, or any created thing named by the Apostles, all are under the Lordship of the Son.
Of Angels He is Lord, as you have it in the Gospels, Then the Devil departed from Him, and the Angels came and ministered unto Him; for the Scripture says not, they succoured Him, but they ministered unto Him, that is, like servants. When He was about to be born of a Virgin, Gabriel was then His servant, having received His service as a peculiar dignity. When He was about to go into Egypt, that He might overthrow the gods of Egypt made with hands, again an Angel appears to Joseph in a dream. After He had been crucified, and had risen again, an Angel brought the good tidings, and as a trustworthy servant said to the women, Go, tell His disciples that He is risen, and goes before you into Galilee; lo, I have told you: almost as if he had said, “I have not neglected my command, I protest that I have told you; that if you disregard it, the blame may not be on me, but on those who disregard it.”
This then is the One Lord Jesus Christ, of whom the lesson just now read speaks: For though there be many that are called gods, whether in heaven or in earth, and so on, yet to us there is One God, the Father, of whom are all things, and we in Him; and One Lord, Jesus Christ, through whom are all things, and we through Him.
Source: Catechetical Lectures (New Advent)