Flaming

So he drove out the man;
and he placed at the east of the garden of Eden Cherubims,
and a flaming sword which turned every way,
to keep the way of the tree of life.
Genesis 3:24 KJV

And it came to pass,
that,
when the sun went down,
and it was dark,
behold a smoking furnace,
and a burning lamp that passed between those pieces.
Genesis 15:17 KJV