Then flew
`uwph  (oof)
to cover (with wings or obscurity); hence to fly; also (by implication of dimness) to faint (from the darkness of swooning)
'echad  (ekh-awd')
united, i.e. one; or (as an ordinal) first
of the seraphims
saraph  (saw-rawf')
burning, i.e. (figuratively) poisonous (serpent); specifically, a saraph or symbolical creature (from their copper color) -- fiery (serpent), seraph.
unto me having a live coal
ritspah  (rits-paw')
a hot stone; also a tessellated pavement -- live coal, pavement.
in his hand
yad  (yawd)
a hand (the open one (indicating power, means, direction, etc.),
which he had taken
laqach  (law-kakh')
to take (in the widest variety of applications)
with the tongs
melqach  (mel-kawkh')
(only in dual) tweezers -- snuffers, tongs.
from off the altar
mizbeach  (miz-bay'-akh)
an altar -- altar.