The Theocracy and the Pontiff

Both powers are derived from God and there's they remain distinct although the temporal power because it's concerned with a less exalted end is subordinated to the spiritual power. The reason why our lord distinguished these two powerswhy he didn't just make the Pope ruler of the world in other words king as well as pontiff is an account of human pride that is sin has introduced a kind of tension between temporal goods and spiritual goods.