The life of the Christian is comprised of times of joy and times of bitterness.  We can learn from the example of the children of Israel; they chose to murmur and complain in times of bitterness in spite of all that God had done for them.  God’s purpose is to shape us, not to break us.  We ought to praise God in recognition of all the way He has led us and will continue to lead us through both the times of joy and the times of bitterness. Exodus 15. VF-2510.