Acts 22:29

Then straightway - Immediately. They saw that by scourging him they would have Violated the Roman law, and exposed themselves to its penalty.

Which should have examined him - Who were about to torture him by scourging him, Acts 22:24.

Because he had bound him - Preparatory to scourging him. The act of binding a Roman citizen with such an intent, untried and uncondemned, was unlawful. Prisoners Who were to be scourged were usually bound by the Romans to a pillar or post; and a Similar custom prevailed among the Jews. That it was unlawful to bind a man with this intent, who was uncondemned, appears from an express declaration in Cicero (against Verres): “It is a heinous sin to bind a Roman citizen; it is wickedness to beat him; it is next to parricide to kill him, and what Shall I say to crucify him?”