Augustine of Hippo

"So shall I always keep Your law" [Psalm 119:44]: that is, if You will not take the word of Your truth out of my mouth. "Yea, unto age, and age of age:" he shows what he meant by "alway." For sometimes by "alway" is meant, as long as we live here; but this is not, "unto age, and age of age." For it is better thus translated than as some copies have, "to eternity, and to age of age," since they could not say, and to eternity of eternity. That law therefore should be understood, of which the Apostle says, "Love is the fulfilling of the law." [Romans 13:10] For this will be kept by the saints, from whose mouth the word of truth is not taken, that is, by the Church of Christ Herself, not only during this world, that is, until this world is ended; but for another also which is styled, "world without end.". ..