The answer is: Flaming sword

Gen 3:24

In the rich tapestry of the Genesis narrative, the moment when God places cherubim and a flaming sword to guard the Tree of Life indeed signifies a turning point—humankind's access to eternal sustenance is severed in the wake of disobedience. This Executive Security detail, combining divine and creaturely elements, offers both guardianship and warning. Beyond the mere image of a fearsome sword, it symbolizes the serious consequences of turning away from divine commandments.

Now, let’s unpack the intriguing symbolism of the cherubim. These aren't just cute baby angels with wings; they represent incredible power and are often associated with the presence of God themselves! Their role in guarding the Tree aligns them with protective, yet purposeful, functions—remember that the only other time cherubim appear so prominently is in the tabernacle and the Ark of the Covenant.

As for the flaming sword, did you know that similar metaphors appear in various literature to depict irreversible choices or life-changing paths? It's as if the biblical writer is tracing a cosmic barrier around the path to lasting life. Moreover, some thinkers will argue that this act of guarding isn’t meant to forever separate humanity from paradise, but perhaps to initiate a deeper journey toward redemption. This paradox nurtures hope out of loss, suggesting that like the Tree of Life, the fullness of understanding may eventually be reclaimed. So, through theological threads and vibrant storytelling, Genesis inspires both reverence and introspection!