Deuteronomy 31:7,8

Moses hands over to Joshua that office as leader of the people, to which he had already been designated Deuteronomy 1:38; Numbers 27:23. He assigns also to the Levitical priests and the elders, as the ecclesiastical and civil heads of the nation, the responsibility of teaching the law and enforcing its observance Deuteronomy 31:10. Both these were symbolic acts, designed to mark the responsibility of the parties concerned after the death of Moses.