“once saved, always saved,” has become a watchword for certain branches of Christianity. Others are quite willing to admit that individuals can and do “fall from grace” but are also convinced that when they do, the door is always open for them to return. Neither side’s optimism finds much support in Hebrews. If someone’s “enlightenment” is “once and for all” (hapax [TG530, ZG562]; 6:4), it is “impossible” to go back and experience it again because that would be like asking Jesus to be crucified