"There is no explanation for this in the Torah itself and it is categorized as a type of law known as "chukim", a statute beyond man's ability to comprehend.First-century Romano-Jewish historian Josephus suggested that the reason for the prohibition was to keep the laity from wearing the official garb of the priests, while medieval Sephardic Jewish philosopher Maimonides thought that the reason was because heathen priests wore such mixed garments.