Adam Clarke on Isaiah 12:6

Thou inhabitant of Zion - Not only the Jewish people, to whom his word of salvation was to be sent first; but also all members of the Church of Christ: as in them, and in his Church, the Holy One of Israel dwells. St. Paul, speaking of the mystery which had been proclaimed among the Gentiles, sums it up in these words:" which is Christ in You, the hope of glory; whom we preach, warning every man, and teaching every man in all wisdom, that we may present every man perfect in Christ Jesus;" Col 1:27, Col 1:28. Well, therefore, may the inhabitant of Zion cry oat and shout, and proclaim the greatness of her Redeemer.