"You are members of God’s family. Together, we are his house, built on the foundation of the apostles and the prophets. And the cornerstone is Christ Jesus himself. We are carefully joined together in him, becoming a holy temple for the Lord. Through him you Gentiles are also being made part of this dwelling where God lives by his Spirit."
In the first couple chapters of his letter to the Ephesian church, Paul reminds them that they had been outsiders; separated from Christ, without hope and without God.
But God, in His mercy and grace, had given them life, hope, and now they are being built into the dwelling place (the House) of God, not a building or a doctrine, but the collective of Jesus followers on mission together with Him.
Paul reminds us that:
We are members of God’s family, adopted, reconciled, and included.
We are God’s house, built on the foundation of the Gospel of which Jesus Himself is the cornerstone.
We are becoming a holy temple, called to to be the House of God.
We are church, being built in and on and by Jesus, not only the foundation and cornerstone, but also the architect and builder who then moves in and (abides in and through HisChurch.
“Our community with one another consists solely in what Christ has done to both of us.” - Bonhoeffer