With respect to the "Image of Satan", there are many orthodox Reformed theologicians who use the phrase (e.g., Edwards, Bunyon, Pink, etc.). No "orthodox" Lutheran theologian will use the expression because, like J Edwards and Pilgrim, they connect it with Flacianism and Manicheanism. However, I do have a quote from the father of "Lutheran Pietism".
Quote
True Christianity by John Arndt Christians, here deceive themselves; but let them take heed, how they go about to lessen or extenuate the transgression of Adam, in whom they are fallen, as if it were nothing more than some little peccadillo, a poor trifle, or the eating of an apple at worst. But rather let them assuredly think and believe, that the guilt of Adam as well as of' Lucifer, was, that he fain would be as God; that it was the same transgression in them both; that it was the same, most grievous, most heinous, most detestable crime in one as in the other; the same wicked apostasy, the same vile treason, and the same tyrannical affecting and usurping the rights of the divine majesty, even to be as God. ... Hence after this, man became inwardly like the devil, bearing his express likeness in heart and mind; since both the one and other of them had now sinned the same sin, had committed the same high crime, as traitors against the Majesty of heaven. No longer does man carry upon him the image of God; but the portraiture of the devil. Nor any longer is he after this, the instrument of God and his Spirit; but the organ of the devil and his spirit, and so is thereby capable of all manner of devilish wickedness. And thus man losing the image that was heavenly, spiritual, and divine, became altogether earthly, fleshly, and brutish, yea, devilish. For the devil, that he might imprint and seal his own image upon man, cunningly soothed him up, and by a train of enticing and deceitful words, so charmed him, and prevailed on him, as to let him sow in him his seed, which is called the seed of the serpent; by which seed, I chiefly understand, self-love or self-will; and the ambition of being as God, that is, an affectation of supremacy, or of God-head.
