Angels And Guardians

Καὶ ἔταξε τὰ χερουβίμ Οὐ μόνον τὰ λειτουργικὰ πνεύματα φυλάσσουσι τὴν ὁδὸν τοῦ ξύλου τῆς ζωῆς, ἀποστελλόμενα διὰ τοὺς μέλλοντας κληρονομεῖν σωτηρίαν, ἀλλὰ καὶ ἐναντίαι δυνάμεις φυλάττουσι, κωλύουσαι, τοὺς βουλομένους προσπορεθῆναι τῷ ξύλῳ τῆς ζωῆς. Ὠριγένης, Εἰς Την Γενεσιν, Ἐκλογαι  Source: Migne PG 12.101

And He placed the Cherubim... 1 Not only do the 'serving spirits' guard the way to the tree of life, 'being sent out for those who will inherit salvation,' 2 but they guard against those powerful ones who call away those who would advance to the tree of life. Origen, On Genesis, Fragment  1 Gen 3.24 2 Hebr 1.14