Deuteronomy 34:6-8

New Revised Standard Version, Anglicised Catholic Edition

⁶ He was buried in a valley in the land of Moab, opposite Beth-peor, but no one knows his burial place to this day. ⁷ Moses was one hundred and twenty years old when he died; his sight was unimpaired and his vigour had not abated. ⁸ The Israelites wept for Moses in the plains of Moab for thirty days; then the period of mourning for Moses was ended.