Jamieson, Fausset and Brown on Genesis 3:24

24. placed ... cherbim--The passage should be rendered thus: "And he dwelt between the cherubim at the East of the Garden of Eden and a fierce fire, or Shekinah, unfolding itself to preserve the way of the tree of life." This was the mode of worship now established to show God's anger at sin and teach the mediation of a promised Saviour as the way of life, as well as of access to God. They were the same figures as were afterwards in the tabernacle and temple; and now, as then, God said, "I will commune with thee from above the mercy seat, from between the two cherubims" (Ex 25:22).