But chose the tribe of Judah, the mount Zion which he loved.
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George Leo Haydock
Sion. The ark was removed from Cariathiarim, in the tribe of Juda, to the house of Obededom, for three months, and afterwards to the palace or tabernacle on Sion, (Haydock) which God had probably chosen for its fixed abode, towards the beginning of David's reign. (Calmet)