Now behold, the LORD has let me live, just as He spoke, these forty-five years, from the time that the LORD spoke this word to Moses, when Israel walked in the wilderness; and now behold, I am eighty-five years old today. (JOS 14:10) [Caleb is 85 years old at the end of the conquest when the Israelites are apportioning the Land and he is 78 when the Israelites enter the Land and begin the conquest. The conquest of the Land took 7 years (math).