Numbers 12:8

With him will I speak mouth to mouth, and not merely in obscure visions, even apparently, so that Moses could see God in some clear manifestation, and not in dark speeches; and the similitude, the form, of the Lord shall he behold; wherefore, then, were ye not afraid to speak against My servant Moses? Reverential awe of God, whose minister and representative Moses was, should have kept Miriam and Aaron from uttering a single word against his authority.