8.  But if any one wishes to learn how we call God “Father,” let him hear Moses, the excellent schoolmaster, saying, Did not this thy Father Himself buy thee, and make thee, and create thee Deut. xxxii. 6.?  Also Esaias the Prophet, And now, O Lord.  Thou art our Father:  and we all are clay, the works of Thine hands Is. lxiv. 8..  For most clearly has the prophetic gift declared that not according to nature, but according to God’s grace, and by adoption, we call Him Father.