Genesis 42:14 - Ellicott's Commentary On The Whole Bible

That is it... — Joseph persists in his charge, because, besides the information which he gained, he also wished to get Benjamin into his power, that he might have him with him. As for his brethren, he had probably as yet no settled purpose, but naturally he would feel great indignation at the treatment he had experienced at their hands, and might not be unwilling to give them some degree of punishment.