A.B. Simpson emphasizes the contrast between human and divine measures in his sermon 'God's Measureless Measures.' He warns against the folly of measuring ourselves by our own standards or by comparing ourselves to others, urging believers to strive for God's higher calling and to align their lives with His will, word, grace, glory, and the example of Christ. Simpson encourages the congregation to recognize that true fulfillment and strength come from God's abundant resources and to live according to the power that works within them. He concludes by reminding them that their faith should be expansive, allowing them to receive God's immeasurable blessings.