Chuck Smith discusses the profound message of Jeremiah 2:13, emphasizing how the nation of Israel forsook God, the 'Fountain of Living Water,' in favor of their own broken cisterns. He illustrates how their initial dependence on God during times of weakness turned into a reliance on their own resources during prosperity, leading to spiritual decay. Smith warns that when individuals turn away from God, they inevitably worship something else, which ultimately proves to be unfulfilling and inadequate. The sermon highlights the futility of human philosophies that cannot sustain life, contrasting them with the life-giving presence of God.