Muhammed argues that Prophet Muhammad must be either the greatest liar or the most truthful person, and that distinguishing between the two should be easy by examining his life. He presents evidence from Muhammad's biography—living 40 years among his people who called him 'the trustworthy and honest,' refusing worldly offers of wealth and power, making accurate predictions about future events (Roman-Persian wars, tall buildings in Arabia, Abu Lahab's death), and living a simple life despite being a leader. He contrasts Islam with Judaism (exclusive, not universal) and Christianity (irrational Trinity doctrine), explaining that Islam as 'submission to God' existed from Adam, while different prophets received different practices for their times but the same core beliefs.
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