Makkah is considered significant as the place for Hajj because it is seen to be the holiest city. Muslims believe that it is here that: Prophet Ibrahim (Abraham) was commanded by God, in a dream, to sacrifice his son, Isma'il. Also, Ibrahim overcame a test when the devil appeared, trying to trick him into denying God's word. Ibrahim threw stones to drive the devil away. Ibrahim's wife, Hajar, searched frantically for water in the desert. Miraculously an angel showed her the Zamzam well. Ibrahim built the Ka'ba as a place of worship to the one, true God. Prophet Muhammad was born. Prophet Muhammad received the first revelations from God. Prophet Muhammad returned before his death to reclaim the city for God. Therefore, the route of the Hajj pilgrimage takes believers to the sacred sites where many of these events are said to have taken place.