He drove the man away and stationed cherubs at the east of the garden of Eden, and a flaming sword which turned every way, to guard the way to the tree of life.
"Flaming sword which turned every way" guarding "the tree of life" that gives you knowledge, and if you use it enough -- even eternal life?.....
Hmm.... lets see... what is the primitive word ancient man would have used for "Laser" again?...
Sounds like G-D had a laser security system to me.