… and come before his presence with a song (Psalm 100)
In the house of the Lord, slavery is free. It is free because it serves not out of necessity, but out of charity… Charity should make you a servant, just as truth has made you free… you are at once both a servant and free: a servant, because you have become such; free, because you are loved by God your Creator; indeed, you have also been enabled to love your Creator… You are a servant of the Lord and you are a freedman of the Lord. Do not go looking for a liberation which will lead you far from the house of your liberator!
Augustine Enarratio in Psalmum XCIX – Expositions of the Psalms
