God allows troubles, trials and tests in our lives to grow our faith in Him. This is because our temptation when we’re going through difficulty is to forsake our faith in Christ and to trust in our selves, rather than to trust in, and rely upon, the Lord. Such carnality leads to spiritual death, as mentioned in James 1:15. When we yield, or submit, to the dictates of our fallen human nature, we are living life in carnality and willful rebellion against God and the leading of His Holy Spirit. God cannot be glorified in and through our lives as long as we refuse to relinquish control in our lives to the will of God.