Then the children of Judah drew near to Joshua in Gilgal: and Caleb the son of Jephunneh the Kenizzite said to him, You know the thing that Yahweh spoke to Moses the man of God concerning me and concerning you in Kadesh-barnea.
The references to Caleb’s age enable us to determine the length of the conquest of Canaan. Caleb had received the promise of a portion in the land at Kadesh Barnea 38 years before the Israelites crossed the Jordan and entered Canaan (Numbers 14:24). Caleb was 40 years old then (Joshua 14:7). He was now 85 (Joshua 14:10). Forty-five years had elapsed, and Caleb had spent 38 of them in the wilderness. Therefore the conquest must have taken the remaining seven years.