to renew, restore: to bring someone or something back to a former condition
The word means to make something new again, to bring it back to a state it once held. Greek writers used it for renewing a war or a broken peace, reviving an old legend, and rebuilding a temple; Jewish and Christian writers stretched it to the renewing of a person.
The weight falls on the "again" more than on the "new." In the Greek Old Testament this verb regularly translates the ordinary Hebrew word for renewing (חדשׁ), and its most memorable use there is the prayer of Lamentations, "renew our days as of old." The renewal it names looks back to a former condition rather than forward to something never seen before.
That backward-looking flavor matters for its single New Testament appearance. The letter to the Hebrews reached for this older, restoration-shaped word rather than the newer term Paul favored for spiritual renewal (ἀνακαινόω), and many scholars read that choice as pointing to a return to a condition once held, not a brand-new act of re-creation.
In Hebrews 6:6 the verb is active but names no subject, so scholars disagree over whose renewing of those who have fallen away is called impossible, and whether that impossibility is final or only practical.
- majorityThe impossibility is final and rests on God's own work: because Christ was offered once for all, there is no basis for a second entry into repentance, so no particular agent is really in view. The once-for-all structure of the letter's argument supports this reading.; Harold W. Attridge, The Epistle to the Hebrews (Hermeneia; Fortress, 1989), 167-170; Paul Ellingworth, The Epistle to the Hebrews (NIGTC; Eerdmans, 1993), 319-323; William L. Lane, Hebrews 1-8 (WBC 47A; Word, 1991), 141; Craig R. Koester, Hebrews (AB 36; Doubleday, 2001), 315
- minorityThe impossibility is practical rather than absolute: it describes what Christian teachers and the community cannot accomplish in reclaiming such people, while God's own power to restore them is not denied.; F. F. Bruce, The Epistle to the Hebrews, rev. ed. (NICNT; Eerdmans, 1990), 148-149; B. F. Westcott, The Epistle to the Hebrews, 3rd ed. (Macmillan, 1903), 165-168