A.W. Tozer addresses the dangers of becoming complacent in our spiritual lives, using Israel's experience in the wilderness as a metaphor for the 'tyranny of the customary.' He emphasizes that Israel became trapped in a cycle of routine, content to remain at the mountain rather than pursuing the promised land. Tozer warns that this mindset can lead to spiritual stagnation, as we may become satisfied with our current state and lose sight of God's greater promises. He calls for a breaking away from the comfort of the familiar to embrace the movement God desires for us. Ultimately, Tozer encourages believers to recognize when they have lingered too long in their spiritual journey and to take action towards growth and fulfillment.