His chief sin was disobedience. Samuel, the recognized representative of God in the nation, had commanded him to wait till he arrived in Gilgal, saying he would come in seven days. Saul did not wait till the end of the seventh day, thereby showing an impatient and disobedient spirit. God demands that men obey Him implicitly. "To obey is better than sacrifice," Samuel said to Saul on another occasion of his disobedience. Probably, also, Saul had no right to conduct the ritual of sacrifice. As to Samuel's doing so, he may simply have ordered it done, directing Eleazar the priest to conduct the ceremony; or his office of prophet may have given him the authority to act also as priest. Furthermore, though not a descendant of Aaron, he belonged to the priestly tribe of Levi.