Pseudo-Dionysius the Areopagite

(de Divin. Nom. i.) For then when we shall be incorruptible and immortal, by the visible presence of God Himself we shall be filled with most chaste contemplations, and shall share the gift of light to the understanding in our impassible and immaterial soul after the fashion of the exalted souls in heaven; on which account it is said that we shall be equal to the Angels.