Joshua 14

Now therefore, give me this mountain of which the Lord spoke in that day; for you heard in that day how the Anakim were there, and that the cities were great and fortified. It may be that the Lord will be with me, and I shall be able to drive them out as the Lord said. v.12

Read chapter 14
Caleb is speaking here.  The same Caleb that went with Joshua and ten others to spy out the land of Canaan forty-five years ago.  And Caleb, if you remember, was the one that believed God would give them that land rather than fearing the giants that they saw that caused the others to doubt.  Caleb and Joshua were the only ones with the right perspective realizing how great their God is to these little giants rather than focusing on how big the giants were.  Jim Boyce puts it this way, "Compared to the giants, the Jews seemed like grasshoppers. Caleb and Joshua looked at God rather than circumstances, and when compared to God, the giants were as grasshoppers."
Well it's been forty five years since this happened and Caleb still remembers God's promise to Israel and is taking claim to it now.  Caleb is 85 years old and just as strong as he was when he was 45 years old with the strength for war (v.11) and ready to take the mountain where the giants lived.  Just look at his vigor.  Just because he's old he's not taking things easy, he's still going strong ready to battle the giants because of the Lord's promise.  "Faith will give you strength. And, on the other hand, unbelief and rebellion will sap your strength"(Nancy Leigh DeMoss).  Caleb had showed amazing faith after God in his  forties and that continued on into his eighties.  Choose to press hard after God now, that in your eighties your faith will be just as strong.
What is your perspective of the size of God to the size of your troubles?