Walk through Amos, verse by verse, with the great Bible Commentaries of Matthew Henry (1662 - 1714) & Adam Clarke (1760 - 1832)
9:11
In that day will I raise up the tabernacle of David that is fallen, and close up the breaches thereof; and I will raise up his ruins, and I will build it as in the days of old: KJV
{In that day I shall raise the tabernacle of David, that fell down, and I shall again-build openings of
the walls thereof, and I shall restore the things that fell down; and I shall again-build it, as in old days,} Wycliffe's Bible
Will I raise up the tabernacle of David - It is well known that the kingdom of Israel, the most profane and idolatrous, fell first, and that the kingdom of Judah continued long after, and enjoyed considerable prosperity under Hezekiah and Josiah. The remnant of the Israelites that were left by the Assyrians became united to the kingdom of Judah; and of the others, many afterwards joined them: but this comparatively short prosperity and respite, previously to the Babylonish captivity, could not be that, as Calmet justly observes, which is mentioned here.
These tabernacles had fallen and gone to decay, the royal family was so impoverished, its power abridged, its honour stained, and laid in the dust; for many of that race degenerated, and in the captivity it lost the imperial dignity. Sore breaches were made upon it, and at length it was laid in ruins. So it was with the church of the Jews; in the latter days of it its glory departed; it was like a tabernacle broken down and brought to ruin, in respect both of purity and of prosperity. 2. By Jesus Christ these tabernacles were raised and rebuilt.