There are two: one wing holds him in contact with the divine understanding, and the other with divine memory/inspiration. The two wings are therefore related to the contemplative and creative aspects of God which, in their turn, correspond to the divine image and likeness in man of which Genesis speaks.
The two Angelic wings are the Angel’s links with the eternal sabbath and the eternal creativity of God – or, in other words, with divine gnosis and divine magic. It is by means of the “gnostic” (or “left”) wing that the Angel is in contemplation of divine wisdom, and it is by means of the “magical” (or “right”) wing that he is active in his capacity as messenger or “Angel”.
This is the principle of polarity underlying the duality of the wings. The principle remains valid also for Angels – and for entities from other spiritual hierarchies – who have more than two wings (sixteen, for example). It will be the task of a future science of “Angelology” to grasp the reason or reasons for the plurality of wings of certain Angelic entities.
With respect to us, we have to restrict ourselves to a general explanation of the two wings of Angels, in reminding ourselves that it is a matter here of meditation on the fourteenth Arcanum of the Tarot, whose card represents an entity with two wings.
From tradition we know that there are also human beings endowed with wings….The astral and etheric wings of a human being signify a more-or-less advanced degree of recovery of the divine likeness in him. For certainly it was the lot of men before the original sin to have wings. He lost them subsequently. How are they recovered?
Unknown Author, Meditations on the Tarot, Letter XIV Temperance