Matthew Poole and continuators on 2 Corinthians 11:14

14 And no marvel, for Satan himself is transformed into an angel of light .

It is not at all to be admired, that the Emissaries of Satan dissemble, and pretend themselves to be what they are not, for even Satan himself, who is the prince of darkness, in order to the deceiving and seducing of Souls, transformeth himself into an Angel of light; that is, puts on the appearance and form of a good Angel. He calls them Angels of light, because they were wont to appear in a lightsome brightness; or because of that glory in which they behold the Face of God; or because of those great measures of Heavenly knowledge which those blessed Spirits have. All tempted Souls have an Experiment of this; for none is tempted to Evil under the appearance of Evil; (Evil as Evil being what a reasonable Soul cannot be courted to.) The Devil therefore, in all his temptations to sin, though his end be to ruine and destroy, yet appeareth as an Angel of light; moving the Soul to Evil under the notion and appearance of good.