By His Co-Eternal Word He Speaks, and All Things are Done
9 You call us, therefore, to understand the Word, God with You, God, which is spoken eternally, and by it are all things spoken eternally. For what was spoken was not finished, and another spoken until all were spoken; but all things at once and for ever. For otherwise have we time and change, and not a true eternity, nor a true immortality. This I know, O my God, and give thanks. I know, I confess to You, O Lord, and whosoever is not unthankful to certain truth, knows and blesses You with me. We know, O Lord, we know; since in proportion as anything is not what it was, and is what it was not, in that proportion does it die and arise. Not anything, therefore, of Your Word gives place and comes into place again, because it is truly immortal and eternal. And, therefore, unto the Word co-eternal with You, You at once and for ever say all that You say; and whatever You say shall be made, is made; nor do You make otherwise than by speaking; yet all things are not made both together and everlasting which You make by speaking.
Source: Confessions (New Advent)