The question of 'communication' is in the center of the essay, when focusing on the great Danish thinker, Sören Kierkegaard and his view on angels. Being brought up in a Lutheran environment and greatly influenced by his father (himself a member of a fundamentalist Lutheran sect), Kierkegaard's 'angelic experiences' differed very much from those listed in Catholic interpretations or conserved in everyday references to celestial beings. Facing both the surviving pagan traditions (and referred to its 'heavenly' messengers) and referring to the angels of Kierkegaard's Copenhagen (maily as decorations and ornaments) the study highlights the more important, often determinant references of Kierkegaard to angels. In the list of such 'appearances' in his oeuvre, by angels the 'question of communication' is examinated in an original way, while the 'authenticity' is questioned and/or emphasized by their presence. His ideas about transformations of angelic beings into demonic (daimonic) or even diabolic ones, has its very special emphasis of the once common origin of all these creatures, while final and fatal 'fall' of transcendental conscience is mirrored by the fall of angels, when marrying mortal women. His conclusion, that theology married reason the way once fallen angels did, refers to this tragedy, once creating monsters of early times and now repeating this mortal seduction in the 'world of spirit'.