And as they bound him, etc. - They were going to tie him to a post, that they might scourge him.
Is it lawful, etc. - The Roman law absolutely forbade the binding of a Roman citizen. See the note on Acts 16:37.
Bound him with thongs - With cords, preparatory to scourging.
Is it lawful - It was directly contrary to the Roman law to bind and scourge a Roman citizen. See the notes on Acts 16:36-37.