This is a serious question, so no facetious answers, please.
The Jews have the Bible with its history of miracles and direct interaction of God with His people.
The Christians have the New Testament with its records of Jesus, who they believe is God, and what he did and said, including miracles.
What of Islam? However nice the teachings of the Koran are, what counts as evidence that it is the work of God? After all, many faiths have holy scripture, so just scripture itself is not really enough for faith.
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