Each one had six wings!
(J.R. Miller, "Devotional Hours with the Bible")
"In the year that King Uzziah died, I saw the Lord, high and exalted, seated on a throne; and the train of His robe filled the temple. Above Him were seraphim, each one had six wings: With two wings they covered their faces, with two they covered their feet, and with two they were flying." Isaiah 6:1-2
There is something unusual and very impressive in the description of the seraphim in this vision. "Each one had six wings!" Wings are for flight — it is the mission of angelic beings to fly on God's errands. The six wings would seem to signify special readiness to do God's will. But they suggest here, more than their normal use — to fly.
The modern Christian would probably use them all for flying — and would be intensely active. We live in an age when everything inspires to activity. We are apt to run, perhaps too greatly, with our 'wings'.
But we should notice that two of the seraphim's wings were used in covering his face when before God — teaching reverence. Two of them also were used in covering his feet — humility. The other two were used in flying — activity. Reverence and humility — are quite as important qualities in God's service, as activity!