5 You have heard instances of a literal expression, and a literal action, and of a figurative expression; you are waiting for an instance of a figurative action. There are many such, but meanwhile, as is suggested by this mention of the corner-stone, when Jacob anointed the stone which he had placed at his head as he slept, and in his sleep saw a mysterious dream, ladders rising from the earth to heaven, and Angels ascending and descending, and the Lord standing upon the ladder, he understood what it was designed to figure, and took the stone for a figure of Christ, to prove to us thereby that he was no stranger to the understanding of that vision and revelation.
Do not wonder then that he anointed it, for Christ received His Name from “the anointing.” Now this Jacob was said in the Scripture to be “a man without guile.” And this Jacob ye know was called Israel. Accordingly in the Gospel, when the Lord saw Nathanael, He said, “Behold an Israelite indeed, in whom is no guile.” And that Israelite not yet knowing who it was that talked with him, answered, “Whence knew Thou me?” And the Lord said to him, “When you were under the fig-tree I saw you;” as though he would say, When you were in the shadow of sin, I predestinated you.
And Nathanael, because he remembered that he had been under the fig-tree, where the Lord was not, acknowledged His Divinity, and answered, “You are the Son of God, You are the King of Israel.” He who had been under the fig-tree was not made a withered fig-tree; he acknowledged Christ. And the Lord said unto him, “Because I said, When you were under the fig-tree I saw you, do you believe? You shall see greater things than these.” What are these “greater things”? “Verily I say unto you” (for he “is an Israelite in whom is no guile;” remember Jacob in whom was no guile; and recollect of what he is speaking, the stone at his head, the vision in his sleep, the ladder from earth to heaven, the Angels ascending and descending; and so see what it is that the Lord would say to “the Israelite without guile”); “Verily I say unto you, You shall see heaven opened” (hear, you guileless Nathanael, what guileless Jacob saw); “you shall see heaven opened, and Angels ascending and descending” (unto whom?)
“unto the Son of Man.” Therefore was He, as the Son of Man, anointed on the head; for “the head of the woman is the man, and the Head of the man is Christ.” Now observe, He did not say, “ascending from the Son of Man, and descending to the Son of Man,” as if He were only above; but “ascending and descending unto the Son of Man.” Hear the Son of Man crying out from above, “Saul, Saul.” Hear the Son of Man from below, “Why do you persecute Me?”
Source: Sermons on Selected Lessons of the New Testament (New Advent)