Unbelief is The Root of Many Sin and Problems.. Deu9

Moses was reminding the people of the nation's unbelief 40 years earlier, when they had been afraid to enter Canaan. The Israelites had not believed God would be able to help them in spite of all HE had already done. 

They refused to follow because they looked only to their own limited resources instead of to God. Unbelief is the root of many sin and problems. When you feel lost, it may be because you're looking everywhere but to God for your help and guidance.