Tertullian — Against Marcion 19

I am accustomed in my prescription against all heresies , to fix my compendious criterion (of truth ) in the testimony of time ; claiming priority therein as our rule, and alleging lateness to be the characteristic of every heresy . This shall now be proved even by the apostle, when he says: For the hope which is laid up for you in heaven, whereof you heard before in the word of the truth of the gospel; which has come unto you, as it is unto all the world. Colossians 1:5-6 For if, even at that time, the tradition of the gospel had spread everywhere, how much more now! Now, if it is our gospel which has spread everywhere, rather than any heretical gospel, much less Marcion's , which only dates from the reign of Antoninus , then ours will be the gospel of the apostles .

But should Marcion's gospel succeed in filling the whole world, it would not even in that case be entitled to the character of apostolic. For this quality, it will be evident, can only belong to that gospel which was the first to fill the world; in other words, to the gospel of that God who of old declared this of its promulgation: Their sound is gone out through all the earth, and their words to the end of the world. He calls Christ the image of the invisible God. Colossians 1:15 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. Exodus 33:20 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; John 1:3 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? In what way also could it have pleased (the Father) that in Him should all fullness dwell? Colossians 1:19 For, to begin with, what fullness is that which is not comprised of the constituents which Marcion has removed from it — even those that were created in Christ , whether in heaven or on earth, whether angels or men? Which is not made of the things that are visible and invisible? Which consists not of thrones and dominions and principalities and powers?