The Law And The Gospel

Αὐτὸς ὁ μέγας Ἀπόστολος, ὁ πλεῖον πάντων κoπιάσας, ὁ τὸν νόμον ἀκριβῶς μετελθὼν, παιδευσάτω σε, νηπίαν εἶναι ἐν αὐτῷ γνῶσιν τῆς θείας παιδεύσεως , ὡς ἐν σκιᾷ κεκαλυμμένην, καὶ ἀμυδρώς δια ερωμένην . Σκιὰν εἶχεν ὁ νόμος τῶν μελλόντων ἀγαθῶν, ἀποφαινόμενος, οὐκ αὐτὴν τὴν εἰκόνα τῶν πραγμάτων , ἣν ἐπιστεύθη τὸ Εὐαγγέλιον , πρὸς ἣν οἱ τύποι ἐπέβλεπον. Ἅγιος Ἰσίδωρος Του Πηλουσιώτου, Βιβλίον Πρῶτον, Ἐπιστολὴ ΥΜΔ' Ἰσιδωρῳ Διακονῳ Source: Migne 78.425d

Let the great Apostle himself, who toiled more than anyone, 1 and diligently attended to the law, teach you that there was slight knowledge of Divine teaching there, as if it were covered with a veil, and hardly gave itself to be seen. For the law, he proclaims, is a shadow law of future things, 2 not an image of the things themselves, for which the Gospel was given, and to which it points as a figure. Saint Isidore of Pelusium, Book 1, Letter 444, To Isidore The Deacon 1 1 Cor 15.10 2 Heb 10.1