1 Chronicles 11:5

Thou shalt not come hither . The inhabitants of Jebus added something beside ( 2 Samuel 5:6 ). They had said, "Except thou take away the blind and the lame, thou shalt not come in hither: thinking, David cannot come in hither." The castle of Zion . This fort became the site of the temple. It is the Acra of Josephus, and is different from the modern Zion. It was the eastern hill in the city, was the second highest elevation in the city, and up to the time of the destruction of the city of Jerusalem was uniformly named Zion, though from the time of Constantine it has been used for the name of the western hill, the site of Jerusalem. There is but little doubt of the identity of the hill of Moriah with the hill of Zion, though no individual passage of Scripture asserts it. The passage before us, however, with its parallel, tells us plainly enough that the city of David, and that which became the sacred hill of Zion are one; and many passages in the Psalms and the prophets both confirm this and point out the difference between Zion and Jerusalem.