A.W. Tozer emphasizes the transient nature of life and the importance of having a grounded hope. He warns against the false hope of long life on earth, which can lead to a dangerous delusion and ultimately betrayal when faced with death. Tozer highlights that even Christians can fall into the trap of presuming a secure earthly future without true assurance. He calls for a realistic understanding of life’s brevity and the need for a hope that is anchored in faith rather than mere optimism.