Moses appointed judges. These judges were under the watchful eye of God and responsible to Him for their decisions. This is what is missing in many of the judges in our country today; judges responsible to God for their decisions.
Why would Israel need spies when God said He was going to fight for them and give them victory? This was an obvious lack of faith on their part. Moses should have consulted God rather than just decide that it was a good idea. Sometimes our good ideas are not good ideas at all.