The Greek word hápax, represented by G530, means one (or a single) time, used both numerically and to indicate something conclusive. It appears 15 times across 15 unique verses in the Bible. The term is crucial for conveying the concept of a singular, definitive, and often unrepeatable event.
In scripture, G530 is most frequently used to emphasize the finality and sufficiency of Christ's sacrifice. The book of Hebrews contrasts the Old Testament high priest entering the holy place "once every year" Hebrews 9:7 with the fact that "Christ was once offered to bear the sins of many" Hebrews 9:28. This same finality is applied to all humanity, as it is appointed unto men "once to die" Hebrews 9:27. The word also describes singular historical events, such as the faith being "once delivered unto the saints" Jude 1:3, or personal experiences, like Paul being "once was I stoned" 2 Corinthians 11:25.
Several related words provide a broader context for frequency and repetition:
- G4178 pollákis (many times, i.e. frequently): This word is used in direct contrast to G530 to show that Christ did not have to suffer often, but appeared once to put away sin Hebrews 9:26.
- G1364 dís (twice): This term is used alongside G530 to describe a repeated action, as when Paul desired to visit the Thessalonians "once and again" 1 Thessalonians 2:18.
- G5151 trís (three times): This adverb for "three times" helps quantify events, such as in Paul's list of hardships where he was beaten with rods thrice but stoned once 2 Corinthians 11:25.
- G1208 deúteros (second): This ordinal specifies a subsequent event, such as in the promise that after Christ was offered once, he shall appear a second time for salvation Hebrews 9:28.
The theological weight of G530 is most profound in soteriology and eschatology.
- Sufficiency of Christ's Atonement: The primary theological use of G530 is to establish that Christ's death was a single, all-sufficient sacrifice. He "hath once suffered for sins" 1 Peter 3:18 and was "once offered" Hebrews 9:28, making any further sacrifice for sin unnecessary. Worshippers could be "once purged," having no more conscience of sins Hebrews 10:2.
- Finality of Divine Revelation: The faith was "once delivered unto the saints" Jude 1:3, signifying that God's foundational revelation through the apostles is complete and authoritatively established.
- Unrepeatable Events: The term defines absolute, one-time occurrences in God's plan. This includes the universal human experience of being appointed "once to die" Hebrews 9:27 and God's future promise: "Yet once more I shake not the earth only, but also heaven" Hebrews 12:26, an act which signifies a final, unrepeatable cosmic change Hebrews 12:27.
In summary, G530 is far more than a simple numerical adverb. It is a cornerstone for understanding the finality of Christ's work on the cross, distinguishing it from the repetitive rituals it replaced. The word hápax gives weight to singular, decisive moments in God's redemptive history, from the definitive delivery of the faith to the unrepeatable reality of death and judgment, illustrating that some events, by their very nature, need only happen once.