The Greek word omnýō, represented by G3660, is a verb used to swear, i.e. take (or declare on) oath. It appears 27 times across 21 unique verses in the Bible. This term signifies the act of making a solemn declaration, often invoking a higher power or authority to validate a statement or promise.
In the biblical narrative, G3660 is used to describe oaths taken by both God and man. God is shown to swear an oath to establish the certainty of His promises, as when he sware to Abraham (Acts 7:17, Luke 1:73). Because He could swear by no one greater, He sware by himself Hebrews 6:13. Conversely, Jesus commands his followers, "Swear not at all" Matthew 5:34, a prohibition repeated by James James 5:12. The word is also used to describe misguided or desperate human oaths, such as the Pharisees swearing by the gold of the temple Matthew 23:16 or Peter's denial of Christ, when he began to curse and to swear Matthew 26:74.
Several related words help clarify the concept of oaths and solemn declarations:
- G3727 hórkos (an oath): This noun is frequently used with G3660. God had sworn with an oath to David Acts 2:30, and for humans, an oath serves for confirmation to end strife Hebrews 6:16.
- G3728 horkōmosía (asseveration on oath): This term is used specifically in Hebrews to highlight that Christ's priesthood was established with an oath, unlike the former priests who were made without one Hebrews 7:21.
- G2653 katanathematízō (to imprecate): This word describes the act of cursing and is used alongside omnýō in Peter's denial of Jesus Matthew 26:74.
- G332 anathematízō (to declare or vow under penalty of execration): Similar to the above, this term is paired with omnýō when Peter began to curse and to swear Mark 14:71.
- G1861 epangéllō (to promise): This word connects the act of promising to swearing. God first made promise to Abraham and then sware to confirm it Hebrews 6:13.
- G951 bebaíōsis (confirmation): This word describes the purpose of a human oath, which provides confirmation and is an end to all strife Hebrews 6:16.
The theological weight of G3660 is significant, highlighting contrasts between divine faithfulness and human fallibility.
- Divine Oath as Guarantee: When God swears, it serves as an unbreakable guarantee of His promise. He sware to Abraham concerning his descendants Luke 1:73 and to establish the eternal priesthood of Christ after the order of Melchisedec Hebrews 7:21.
- Human Oaths and Integrity: Jesus' prohibition to "swear not at all" Matthew 5:34 elevates the standard of speech for believers. He critiques oaths that rely on created things like the temple or heaven, pointing out that these ultimately invoke God himself Matthew 23:21-22. The command is to have simple integrity, letting a "yea" be "yea" James 5:12.
- The Oath as Confirmation: Oaths are shown to function as a means of ending disputes among men. An oath for confirmation is an end of all strife Hebrews 6:16, demonstrating its role in establishing certainty in human affairs.
In summary, G3660 is a crucial term for understanding solemn declarations in Scripture. It is used to affirm the unchangeable nature of God's promises, most notably His covenant with Abraham and the establishment of Christ's eternal priesthood (Hebrews 6:13, Hebrews 7:21). At the same time, it is central to the New Testament's call for a higher form of integrity, where believers are instructed not to swear at all but to live with such truthfulness that their word alone is sufficient (Matthew 5:34, James 5:12).