Augustine of Hippo

Just as a door leads into a house, so does the title of a psalm lead into understanding. It is thus prefaced: When the house was being built after the captivity. You ask what house; the psalm already indicates to you: Sing to the Lord a new song, sing to the Lord, all the earth. Behold what house this is. When the whole earth sings a new song, it is the house of God. It is built by singing, founded by believing, raised by hoping, perfected by loving. Therefore, it is now being built, but it will be dedicated at the end of the age. Let the living stones gather to the new song, gather and be fitted together into the structure of the temple of God. Let them recognize the Savior, let them receive the inhabitant.