Shekinah, as I recall, is the glory that our race lost with the advent of miscegenation of Adam and Eve with Lilth and Satan.
It was a light that surrounded the fleshly bodies of Adam and Eve and what these two cried about losing to Yahweh when they were cast out of the Garden of Eden. It also enabled them to have direct contact with the heavenly planes and with the angels.
Yahweh took off his Shekinah glory when he came into the Earth as flesh of Adam's seed.
As for the Lake of Fire which is in Heaven, there is where the race of Adam goes once they have violated God's law and are written out of the Book of Life. Since Yahweh made the ultimate sacrifice and took our race out of Hell and bondage, we no longer suffer death in Hell under Satan's control because we are under grace. Now, if we do evil, we suffer the second death in the Lake of Fire which is in Heaven and are under penalty by Yahweh himself.
