In this teaching, we are encouraged to focus on the things that are not seen, which are spiritual things, and not to busy ourselves with the things that are seen. The example of the Israelites sending spies to examine the land of Canaan is given to contrast people who looked at things spiritually and those who looked at them carnally. The battlefield is in the mind, and the captives we take are the thoughts and plans that are carnal. We have a choice of words. What do we decide to believe? We are encouraged to claim and believe God’s Word; when we do, we have joy and rest.