The house of David (that is, the kings of David’s line) and the house of God (that is, the temple in Jerusalem) came bound together in Jewish tradition. 

In 586 B.C.E., Babylon terminated both, destroying Solomon’s building and taking the last Davidic king into captivity. Rebuilt by returning exiles and enhanced by the Hasmoneans, the Second Temple reached its height of splendor thanks to the talents and vision of Herod the Great. Herod, ingeniously combining backfill and huge retaining walls—still visible today as Jerusalem’s Kotel, the Western Wall—enlarged the temple precincts to some thirty-five acres. Its most  exterior courtyard, the Court of the Nations, was Jerusalem’s largest public space. This was the space within which Jesus proclaimed his message of God’s coming Kingdom; this was the space within which his apostles, after his death, continued his mission; this was the space from which, prophesied Paul, quoting Isaiah, “the Redeemer will come”—that is, where the returning messiah would appear (Romans 11.26; Isaiah 59.20). Both actually and imaginatively, both before its destruction in 70 C.E. and even thereafter, Herod’s temple was a major staging area of the gospel movement. - Paula Fredricksen