He was going there in order to arrest Christians and bring them to Jerusalem to stand trial for their treason.

stand 在这里是动词，意思是"站立"，引申为"面对、经受"。 trial 是名词，意思是"审判、审讯"，指法庭上对案件的审理过程。 stand trial 是一个固定短语，意思是"受审、接受审判"，指在法庭上正式面对指控和法律程序。