5069. tetradion
Lexical Summary
tetradion: squad of four soldiers

Original Word: τετράδιον
Part of Speech: Noun, Neuter
Transliteration: tetradion
Pronunciation: te-trah'-dee-on
Phonetic Spelling: (tet-rad'-ee-on)
KJV: quaternion
NASB: squads
Word Origin: [neuter of a presumed derivative of tetras (a tetrad]

1. a quaternion or squad (picket) of four Roman soldiers

Strong's Exhaustive Concordance
quaternion, squad of four soldiers

Neuter of a presumed derivative of tetras (a tetrad; from tessares); a quaternion or squad (picket) of four Roman soldiers -- quaternion.

see GREEK tessares

NAS Exhaustive Concordance
Word Origin
from tessares
Definition
a group of four, a quaternion (a guard of four soldiers)
NASB Translation
squads (1).

Thayer's Greek Lexicon
STRONGS NT 5069: τετράδιον

τετράδιον, τετραδιου, τό (τετράς, the number four), a quarternion (τό ἐκ τεσσάρων συνεστος, Suidas): τῶν στρατιωτῶν, a guard consisting of four soldiers (for among the Romans this was the usual number of the guard to which the custody of captives and prisons was intrusted; two soldiers were confined with the prisoner and two kept guard outside), Acts 12:4, where the four quaternions mentioned were on guard one at a time during each of the four watches. (Philo in Flacc. § 13 i. e. Mang. edition vol. ii, p. 533, 25.)

Topical Lexicon
Introduction

Strong’s Greek 5069 (τετραδίοις) appears once in the New Testament, Acts 12:4, where Luke describes the unusually strict military detail assigned to watch the apostle Peter. Although the word itself simply identifies a detachment of four soldiers, its solitary use in Scripture occurs at a turning point in early-church history, illustrating both governmental opposition and divine deliverance.

Historical Background: Roman Military Custody

Roman practice commonly placed prisoners under continuous surveillance, rotating guards to prevent escape or rescue. A standard night was divided into four watches, and a “squad of four” ensured that at least two soldiers were awake and alert during each watch while the other two rested. By stationing four such squads in succession, authorities maintained an unbroken chain of supervision for a full twenty-four-hour period. Chains were often fastened to a soldier on either side of the prisoner, with the remaining two positioned at the doorway. This arrangement highlights Herod Agrippa’s determination to keep Peter secure until the intended public trial following Passover.

Biblical Context in Acts 12

After executing James the brother of John, Herod saw that the act “pleased the Jews” (Acts 12:3). Seeking further approval, he had Peter seized. Luke records: “After seizing him, he put him in prison, handing him over to be guarded by four squads of four soldiers each, intending to bring him to the people after the Passover” (Acts 12:4).

1. Heightened Security: The quadruple rotation implies extreme caution. Peter had already escaped once from prison (Acts 5:19); therefore, Herod escalated protective measures to forestall any repetition.
2. Political Calculus: By waiting until after the Feast, Herod attempted to avoid unrest during the holy days while maximizing public spectacle later.
3. Divine Intervention: Despite such precautions, an angel of the Lord led Peter past sleeping sentries and iron gates (Acts 12:6-10). The narrative contrasts human power marshaled into squads with God’s unfettered authority.

Theological Significance

1. Sovereignty over Human Structures: Governments may array their finest security, yet God overturns their plans at will. The four-man squad, emblematic of Rome’s disciplined might, proved powerless against divine decree.
2. Encouragement for Persecuted Believers: The early church’s earnest prayer (Acts 12:5) was answered in precise detail. The account reassures later generations that no earthly guard detail can confine the gospel or thwart intercessory prayer.
3. Witness to Unbelievers: Peter’s escape led to Herod’s public humiliation and subsequent judgment (Acts 12:23). Scripture affirms that resistance to God ultimately collapses, however formidable it seems.

Related Biblical Themes

• Angelic Deliverance: Daniel 6:22; Acts 5:19.
• Imprisoned Servants Freed for Ministry: Genesis 39–41 (Joseph); Jeremiah 37–38; Acts 16:24-26.
• Futility of Human Opposition: Psalm 2:1-4; Isaiah 54:17.

Ministry Applications

1. Persistent Prayer: The church “was earnestly praying to God for him” (Acts 12:5). Congregational intercession remains vital when leaders face hostility.
2. Trust amid Confinement: Peter slept between two soldiers the night before trial (Acts 12:6). Believers can rest in God even when circumstances appear inescapable.
3. Prepared Obedience: Once freed, Peter “went to the house of Mary” (Acts 12:12) where the church gathered. Deliverance is not an end but a means to continued service.

Conclusion

The single New Testament occurrence of τετραδίοις encapsulates a vivid clash between earthly authority and heavenly power. Four squads of soldiers could not prevent God’s purpose, underscoring the certainty that “the word of God continued to spread and multiply” (Acts 12:24).

Forms and Transliterations
τετραδιοις τετραδίοις τετράδραχμον τετρακισμύριοι τετριμένος τρήσει tetradiois tetradíois
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Interlinear GreekInterlinear HebrewStrong's NumbersEnglishman's Greek ConcordanceEnglishman's Hebrew ConcordanceParallel Texts
Englishman's Concordance
Acts 12:4 N-DNP
GRK: παραδοὺς τέσσαρσιν τετραδίοις στρατιωτῶν φυλάσσειν
NAS: him to four squads of soldiers
KJV: [him] to four quaternions of soldiers
INT: having delivered to four sets of four soldiers to guard

Strong's Greek 5069
1 Occurrence


τετραδίοις — 1 Occ.

5068b
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