Deuteronomy 34:7-9

Moses was one hundred and twenty years old when he died. His eyes were not dim nor his natural vigor diminished. And the children of Israel wept for Moses in the plains of Moab thirty days. So the days of weeping and mourning for Moses ended. Now Joshua the son of Nun was full of the spirit of wisdom, for Moses had laid his hands on him; so the children of Israel heeded him, and did as the LORD had commanded Moses.