Augustine of Hippo

For if Paul had said only "Jesus Christ," he would have included Jesus Christ according to his divinity, according to his being the Word who was with God, Jesus Christ the Son of God. Yet children cannot receive what is said in this manner. How, therefore, do they who are fed milk receive it? "Jesus Christ," he said, "and him crucified." Feed upon what he did for you, and you will grow to know him as he is. There are therefore both those who ascend and those who descend on that ladder. Who are they that ascend? They who progress towards the understanding of things spiritual. Who are they that descend? They who, although, as far as men may, they enjoy the comprehension of things spiritual: nevertheless, descend unto the infants, to say to them such things as they can receive, so that, after being nourished with milk, they may become fitted and strong enough to take spiritual meat. Isaiah, brothers, was himself among those who descended to us, for the steps upon which he descended are obvious. In reference to the Holy Spirit, he said "the Spirit of wisdom and understanding, of counsel and fortitude, of knowledge and piety, the Spirit of the fear of God rested upon him," he began from wisdom and descended toward fear. See how the teacher descended from wisdom toward fear; you who learn, if you are to make progress, must ascend from fear to wisdom. For it is written, "The fear of the Lord is the beginning of wisdom." Listen, therefore, to the psalms.