I have understood for some time that we are to read the Psalms as the language of Christ our head, and our language also in Him; and so I understood that Christ could superlatively say of His incarnate body, 'Thine eyes did see my substance, yet being unperfect; and in thy book all my members were written, which in continuance were fashioned, when as yet there was none of them.' However I had not thought that His 'substance' and 'members' are actually ourselves -- or that this Psalm speaks of election fundamentally in that sense -- of our election to be Christ's body -- so that the paradigm for all other aspects of even our own physical members is this election into a spiritual reality? But today reading Augustine's Confessions he mentioned what seems to be such an interpretation in passing: '. . . He maketh intercession to Thee for my sins who hath overcome the world; numbering me among the weak members of His body; because Thine eyes have seen that of Him which is imperfect, and in Thy book shall all be written.' (Book X) Is this a common interpretation for Augustine's time? Is it a standard reformed interpretation? Is there anything to be said against it? I think it's wonderful and want it to be so. I love this Psalm particularly because of the assurance it has helped me to have regarding the eternal love of God.