Traces of the belief in a plurality of heavens are to be found in the
O.T. (Deut. 10:14, 1Kings 8:27, Ps. 148:4), and more clearly in the N.T. (2Cor.
12:2, Eph. 1:3, 20, 2:6, 3:10, 6:12; Heb. 4:14, 7:26). The conception is found
in Babylonian, Parsee, and Greek thought, as well as in apocalyptic and
Rabbinic literature. It also appears in early Christian writings. (Pseudepigrapha
of the Old Testament, ed. Robert Henry Charles, 2 vols. [Oxford: Clarendon
Press, 1913], 2:530)