62. The Holy Spirit is not, then, of the substance of things corporeal, for He sheds incorporeal grace on corporeal things; nor, again, is He of the substance of invisible creatures, for they receive His sanctification, and through Him are superior to the other works of the universe. Whether you speak of Angels, or Dominions, or Powers, every creature waits for the grace of the Holy Spirit. For as we are children through the Spirit, because “God sent the Spirit of His Son into our hearts crying, Abba, Father; so that thou art now not a servant but a son;” Gal. iv. 6, 7. in like manner, also, every creature is waiting for the revelation of the sons of God, whom in truth the grace of the Holy Spirit made sons of God. Therefore, also, every creature itself shall be changed by the revelation of the grace of the Spirit, “and shall be delivered from the bondage of corruption into the liberty of the glory of the children of God.” Rom. viii. 19, 21.