The Israelites were promised a land flowing with milk and honey when they left Egypt.  However, they ran into trouble along the way.  Ups and downs, curve balls thrown their way as well as they themselves, messing this up.  But a few of the faithful and courageous men and one in particular stood on God's word that He would provide; Caleb.  Caleb said "give me this mountain".  Not in a selfish and egotistical way but with authority and power because God had made a promise to His people that He would not nor could He break.  So, Caleb with the authority of God's promise declared what was impossible with man was possible with God.