He calls Christ “the image of the invisible God.” We in like manner say that the Father of Christ is invisible, for we know that it was the Son who was seen in ancient times (whenever any appearance was vouchsafed to men in the name of God) as the image of (the Father) Himself. He must not be regarded, however, as making any difference between a visible and an invisible God; because long before he wrote this we find a description of our God to this effect: “No man can see the Lord, and live.” If Christ is not “the first-begotten before every creature,” as that “Word of God by whom all things were made, and without whom nothing was made;” if “all things were” not “in Him created, whether in heaven or on earth, visible and invisible, whether they be thrones or dominions, or principalities, or powers;” if “all things were” not “created by Him and for Him” (for these truths Marcion ought not to allow concerning Him), then the apostle could not have so positively laid it down, that “He is before all.” For how is He before all, if He is not before all things? How, again, is He before all things, if He is not “the first-born of every creature”—if He is not the Word of the Creator? Now how will he be proved to have been before all things, who appeared after all things? Who can tell whether he had a prior existence, when he has found no proof that he had any existence at all?
Tertullian
The Five Books Against Marcion, Book V
Chapter XIX