διαγινώσκω

I know accurately, examine, decide

Definition

The verb διαγινώσκω means to know something thoroughly or to examine it carefully in order to reach a decision. In its two New Testament occurrences, it carries the sense of a formal judicial examination. In Acts 23:15, the chief priests and elders ask the Roman commander to bring Paul down so they might 'examine his case more carefully' (ESV) before he arrives. In Acts 24:22, Governor Felix, having heard the case, postpones a verdict, saying he will 'decide' the matter when the Roman commander Lysias arrives. Thus, the word consistently denotes the process of discerning facts to make an authoritative judgment.

Biblical Usage

This word is used only twice in the New Testament, both times in the Book of Acts within legal proceedings against the Apostle Paul. In both instances (Acts 23:15 and Acts 24:22), it describes the action of a Roman authority figure (a commander or a governor) conducting or intending to conduct a formal judicial inquiry to reach a binding decision. The pattern shows it is a technical term for official investigation and adjudication.

Etymology

Derived from the preposition διά (dia), meaning 'through' or 'thoroughly,' combined with the common verb γινώσκω (ginōskō), meaning 'to know' or 'to perceive.' The compound form intensifies the root meaning, signifying 'to know through and through,' 'to distinguish,' or 'to decide after thorough examination.' It is related to other judicial terms like κρίνω (krinō, G2919), 'to judge.'

Semantic Range

While not a central theological term, διαγινώσκω is significant in the narrative of God's providence in Paul's ministry. Its use in Acts highlights the Roman legal system as the divinely appointed context through which Paul's testimony is protected and advanced toward Rome (Acts 23:11). Understanding this precise meaning enriches the reading of these passages by clarifying that the delays in Paul's trials were part of a formal, deliberative process, ultimately serving God's purpose for the gospel to reach the heart of the empire.

In the Greco-Roman world, this term had a specific legal connotation, referring to the process of judicial examination and decision-making by an authorized magistrate or official. Its use in Acts reflects the formal legal environment of the Roman provincial administration, where thorough investigation (cognitio) was a standard procedure before a verdict. This differs from a modern casual reading of 'know' or 'decide,' as it implies an official, binding judgment.

ἀνακρίνω (anakrinō, G350) — to examine or question judicially, often in a preliminary inquiry. κρίνω (krinō, G2919) — a broader term for judging, deciding, or condemning, not always implying the same thorough investigative process.

Word Details

Scripture References