Final answer:
Moses was 120 years old when he passed on leadership to Joshua as the new leader of the Israelites, as narrated in the Old Testament of the Bible.
Step-by-step explanation:
Moses was 120 years old when he passed on his leadership to Joshua. This momentous event is chronicled in the religious and historical texts of the Bible, specifically in the Old Testament. According to the biblical narrative, Moses led the Israelites out of slavery in Egypt, through the desert, and to the borders of the Promised Land, Canaan. However, he did not enter the land himself; instead, Joshua took over as the leader of the Hebrew people and led several successful military campaigns to settle the land. The transition of leadership from Moses to Joshua is a significant event marking the continuation of the Israelite's journey and quest to fulfill divine prophecy.