Above it stood the seraphim: each one had six wings; with two he covered his face, and with two he covered his feet, and with two he did fly.
All Commentaries on Isaiah 6:2 Go To Isaiah 6
Eusebius of Caesarea
AD 339
Some think there are two seraphim, but I, based on the idea expounded by the sacred Scripture, which says, “the seraphim stood round about him,” think there are many, and they are bodyguards, as it were, like a crown from all sides, surrounding his throne with light and enlivened by him.
