The book of Exodus tells of the travels of the Israelites as they fled Egypt. Through their forty year journey, the people witnessed many miracles of God in His divine care for them. Yet they still grumbled against Him. In spite of all the Lord provided, the people became faithless and their hearts grew hard. David warns us to protect our hearts from the same fate. He tells us not to take our blessings for granted, and give in to grumbling against God. Because when we turn our hearts away from Him is when we get into trouble. Like the Israelites, we too are on an exodus. We are partners with Jesus who leads us on our travels to the Promised Land. So no matter how great the trial, if we have faith in God to see us through the journey, our hearts will remain soft, thankful, and eager to obey Him.