Thorongil, alias Aragorn, part 5
Again, from Appendix A of The Return of the King:
Denethor II was a proud man, tall, valiant, and more kingly than any man that had appeared in Gondor for many lives of men; and he was wise also, and far-sighted, and learned in lore. Indeed he was as like to Thorongil as to one of nearest kin, and yet was ever placed second to the stranger in the hearts of men and the esteem of his father. At the time many thought that Thorongil had departed before his rival became his master; though indeed Thorongil had never himself vied with Denethor, nor held himself higher than the servant of his father. And in one matter only were their counsels to the Steward at variance: Thorongil often warned Ecthelion not to put trust in Saruman the White in Isengard, but to welcome rather Gandalf the Grey. But there was little love between Denethor and Gandalf; and after the days of Ecthelion there was less welcome for the Grey Pilgrim in Minas Tirith. Therefore later, when all was made clear, many believed that Denethor, who was subtle in mind and looked further and deeper than other men of his day, had discovered who this stranger Thorongil in truth was, and suspected that he and Mithrandir designed to supplant him.
The mimetic rivalry of Denethor towards Thorongil/Aragorn calls to mind the many instances of fraternal conflict throughout Scripture: Cain and Abel, Abraham and Lot, Ishmael and Isaac, Jacob and Esau, Joseph and his brothers, Saul and David. It’s a pattern that culminates in the “envy” the Pilot observes in the Jewish leaders who hand Jesus over to be crucified. The Appendix A account of Denethor’s rivalry with Thorongil also sets into even sharper relief the very different response of Denethor’s son, Faramir, to Aragorn, calling to mind Jonathan’s willing acquiescence to David in the Book of Samuel and John the Baptist’s preference of Jesus’s person and ministry over his own in the Gospels.