Many Christians may think that if they simply obey the Lord, they will be spared from any trouble. Troubles are the required course in the school of faith. To avoid troubles is to avoid living; the more you go through, the more you learn about you. Bible gives abundant testimony that all of God’s saints encounter trials. Moses encounterd Pharoah and his armies. David dealt with Golaith. Paul encountered Pharisees.
We cannot understand why God allows troubles, but we know He uses troubles to test our faith.