How do we know Jesus fulfills the promise of the third temple?

The promise of an everlasting temple is fulfilled in Jesus Christ, who is the greater temple represented in the metaphorical sense of God's presence among His people. Haggai's vision of a latter house whose glory exceeds that of the former temples points to Christ himself (Haggai 2:9). Jesus, as the son of David and the great high priest, presides over this house, building a spiritual kingdom that transcends physical structures. We see this fulfillment in the establishment of the church, which is the body of Christ, where God dwells among His people.