\"And cast (Stephen) out of the city, and stoned him: and the witnesses laid down their clothes at the young man's feet, whose name was Saul.\"
Luke's inclusion of the intriguing detail of \"clothing\" being laid at Saul's feet may be a corroboration of the ancient cultural setting of the Book of Mormon.
Alma 46 tells us of Captain Moroni's rending of his coat and raising it as the \"title of liberty,\" and it also tells of the people making a covenant as \"they cast their garments at the feet of Moroni\" (Alma 46:22). Among the covenant people of ancient times, clothing appears to have been used to witness or to attest to something, as a token or sign of one's testimony, or as a symbol of one's formal association with an idea or an action.
Paul seems to have represented the Sanhedrin in overseeing the official stoning of Stephen — an action the Jews believed was supported by the Old Covenant, or Mosaic Law.
— Commentary by D. Kelly Ogden and Andrew C. Skinner in \"New Testament Apostles Testify of Christ\"