How beautiful this prayer is, and how aptly it comes in here in the argument! Such Paganism or star-worship or planet-worship as there was in Abraham's time was first cleared out of Mecca by Abraham. This is the chief meaning of "sanctification" or purification in ii. 125, although of course physical cleanliness is (in physical conditions) a necessary element of purification in the higher sense. Abraham and his elder son Ismail then built the Ka'ba and established the rites and usages of the sacred city. He was thus the founder of the original Islam (which is as old as mankind) in Arabia. As becomes a devout man, he offers and dedicates the work to God in humble supplication, addressing Him as the All-Hearing and the All-Knowing. He then asks for a blessing on himself and his progeny generally, both the children of his eldest-born Ismail and his younger son Isaac. With prophetic vision he foresees that there will be corruption and backsliding in both branches of his family: Mecca will house 360 idols, and Jerusalem will become a harlot city (Ezekiel xvi. 15), a city of abomination. But the light of Islam will shine, and reclaim the lost people in both branches and indeed in all the world. So he prays for God's mercy, addressing Him as the Oft-Returning Most Merciful. And finally he foresees in Mecca an Apostle teaching the people as one "of their own", and in their own beautiful Arabic language; he asks for a blessing on Muhammad's ministry, appealing to the Power and Wisdom of God.