The answer is: 85

Josh 14:10 - He was forty when Moses sent him out to spy on the land and forty-five years had passed since that time.

Let's delve into the life of Caleb, a fascinating figure brimming with courage and faith! We often think of him as one of the twelve spies sent by Moses to scout out the Promised Land, and his age becomes significant in illustrating the themes of persistence and faithfulness.

At 85 years old, Caleb wasn't just stacking up years; he was equipped with a seasoned heart and an unwavering spirit. Picture this: after witnessing the glories and challenges of the land for 45 years! The report he gave, proclaiming trust in God's promise, stood distinctly against the hesitation of the others. Despite the grim reports from most of the spies—their fear and doubt—Caleb, alongside Joshua, radiated a dazzling confidence.

This transition from spy to inheritor is rich with echoes of broader Biblical themes about trust, endurance, and legacy. Hebron, his chosen inheritance, wasn't just land; it was historically significant. It was the burial site of the patriarchs—Abraham, Isaac, and Jacob—and a reminder of God’s covenant promises.

Moreover, Caleb’s bold declaration at 85, “Give me this mountain!” (Josh 14:12), reveals a burning desire to embrace the challenges put forth by faith, providing us uncertainty through blessings—age is just a number! His journey illuminates a profound truth that strength can endure and faithful hearts can act heroically, regardless of years lived. Definitely a call for us to muster our inner Caleb!