5 But the Saviour comes in various forms to each man for his profit. For to those who have need of gladness He becomes a Vine; and to those who want to enter in He stands as a Door; and to those who need to offer up their prayers He stands a mediating High Priest. Again, to those who have sins He becomes a Sheep, that He may be sacrificed for them. He is made all things to all men, remaining in His own nature what He is. For so remaining, and holding the dignity of His Sonship in reality unchangeable, He adapts Himself to our infirmities, just as some excellent physician or compassionate teacher; though He is Very Lord, and received not the Lordship by advancement, but has the dignity of His Lordship from nature, and is not called Lord improperly, as we are, but is so in verity, since by the Father's bidding He is Lord of His own works.
For our lordship is over men of equal rights and like passions, nay often over our elders, and often a young master rules over aged servants. But in the case of our Lord Jesus Christ the Lordship is not so: but He is first Maker, then Lord: first He made all things by the Father's will, then, He is Lord of the things which were made by Him.
Source: Catechetical Lectures (New Advent)