The High Priest as the Divinely Appointed Religious Leader of God's People on Earth

The catholic church doesn't claim that the pope receives revelations from god. In the old testament, this was through the urim and thumim. And even though they cease to be used before the time of christ, the special guidance of the high priest remain. As a result, there is a continuity between the old testament high priests and the new testament high priest like caiaphas and the pope.