Why Islam is the fastest growing religion on Earth
In Islam, every single act of worship must be directed to Almighty (God) alone, and the greatest sin in Islam is to direct even the tiniest part of worship to other than Almighty(God), the most high, the owner of the Universe.
It is not allowed for a Muslim to have any kind of intermediary with Almighty(God, Allah) in worship, whether a living being, or an inanimate object.
Muslims pray to Allah – Almighty God – alone, and they do not take things either as direct objects of worship, or indirect objects of worship through which God’s help is sought.
The Ka’bah (also writtern as Kaaba) is a mosque – a Muslim place of worship, built by the Prophet Ibrahim (Abraham), and before him by Adam, the Father of Mankind.
It serves as a place of prayer, and the direction which every single Muslim around the world faces to pray. It also plays a critical role in the greater and lesser pilgrimages of Hajj and ‘Umrah, as the structure which Muslims circle around.
Allah informs us about the Ka’bah in the Qur’an, saying: “And [mention, O Muhammad], when We showed Abraham
the site of the House (i.e., the Ka’bah), [saying], “Do not associate anything with Me and purify My House for those who circumambulate it, and those who stand [in prayer], and those who bow and prostrate.” [The Qur’an: al-Hajj 22:26]
Note: Why Islam the fastest growing religion Ref. to worldatlas.com for survey result