48. The Apostle saith that Christ is the image of the Father—for he calls Him the image of the invisible God, the first-begotten of all creation. First-begotten, mark you, not first-created, in order that He may be believed to be both begotten, in virtue of His nature, i. e., of His Sonship. St. Ambrose refers to Col. i. 15. and first in virtue of His eternity. In another place also the Apostle has declared that God made the Son “heir of all things, by Whom also He made the worlds, Who is the brightness of His glory, and the express image of His substance.” Heb. i. 2. The Apostle calls Christ the image of the Father, and Arius says that He is unlike the Father. Why, then, is He called an image, if He hath no likeness? Men will not have their portraits unlike them, and Arius contends that the Father is unlike the Son, and would have it that the Father has begotten one unlike Himself, as though unable to generate His like.