Matthew Poole and continuators on Acts 15:16

16 After this I will return, and will build again the tabernacle of David, which is fallen down: and I will build again the ruins thereof, and I will set it up:

In the days of the Messiah.

The word may be taken in both voices. If Actively, it signifies Gods returning unto the Gentiles, from whom he had departed: If Passively, it foreshews their returning unto God, whom they had forsaken.

The House expressed by a Tabernacle (as frequently in Scripture) because that Anciently they dwelt only in Tabernacles. And this for the Throne of David, who was a Tipe of Christ, whose Kingdom is over all. God does promise less than he does perform, for he did not only restore the Tabernacle of David, in Christ; but raised it to a far greater Splendor and Glory in its Spiritual State. And tho St. Iames here does not exactly keep unto the words of the Prophet, he speaks their sense and meaning.