Charles Ellicott Commentary Acts 23:22

"So the chief captain let the young man go, charging him, Tell no man that thou hast signified these things to me." — Acts 23:22 (ASV)

So the chief captain.—The chiliarch is obviously glad of the intelligence. His sympathies are clearly with St. Paul personally, as opposed to the high priest and his followers. He welcomes an opportunity to show his zeal for the safekeeping of a Roman citizen and to make a statement about the entire matter from his own point of view. With true official caution, he treats the communication he has received as confidential and takes measures accordingly.