Joshua 14:12 Now therefore give me this mountain, whereof the Lord spake in that day; for thou heardest in that day how the Anakim were there, and that the cities were great and fenced: if so be the Lord will be with me, then I shall be able to drive them out, as the Lord said.
Caleb, along with Joshua, believed God from the start, and he was faithful through the 45 years since the spies first went into the land. Most of the spies and all the people were afraid because of the walled cities and the Anakim (giants) in the land. Except for Joshua and Caleb: their faith gave them courage.
There were still Anakim in the land that Caleb wanted to possess as his inheritance. However, he knew that the Lord would be with him and fight for him. Therefore he confidently asserted, “I will be able to drive them out.” This response of bold confidence came over him because it was as the Lord said. God promised and He will keep His word.
This kind of faith is also given to us in Word and Sacrament. Jesus is with me: therefore I can drive out the enemies, the big problems that loom in my life. The Bible says: “Resist the devil, and he will flee from you.” “Be angry and do not sin…give no opportunity to the devil.” “The gates of hell cannot stand.” In Christ we have more strength and courage to drive them out than we ever would in our own strength. We respond to every big problem in God-given faith.