18 Do good to Zion in your good pleasure; build up the walls of Jerusalem;
19 then will you delight in right sacrifices, in burnt offerings and whole burnt offerings; then bulls will be offered on your altar. Psalm 51, King David.
Salvation is not just a restoration of the individual only but rather David in this passage is the great hint to Christ – christ is restoring all things to himself including creation. That is why this passage after beginning in an individual confession ends in the plural and with the city. As sin is a cosmic undoing, so salvation in Christ is a cosmic restoration both now, and it will be fully manifested in the new heavens and new earth.