ἐφάπαξ

Romans 6:10 For in that he died, he died unto sin once: but in that he liveth, he liveth unto God. 1 Corinthians 15:6 After that, he was seen of above five hundred brethren at once; of whom the greater part remain unto this present, but some are fallen asleep. Hebrews 7:27 Who needeth not daily, as those high priests, to offer up sacrifice, first for his own sins, and then for the people' s: for this he did once, when he offered up himself. Hebrews 9:12 Neither by the blood of goats and calves, but by his own blood he entered in once into the holy place, having obtained eternal redemption for us. Hebrews 10:10 By the which will we are sanctified through the offering of the body of Jesus Christ once for all.