Both rooted in a monotheistic context, these religions believe in one God, Allah of Islam and God of Christianity. Christians follow a certain set of religious guidelines, called the Ten Commandments, or Decalogue, which serve as an expression of the word of God. Likewise, members of the Islamic faith follow a set of guidelines, called the Five Pillars of Islam, which are five duties expected of every Muslim. But like all religions, they have their respective differences, different sacred texts, the Bible - sacred to Christianity - and the sacred text of Islam, the Koran, different places of worship, known as church and mosque, and also different holy cities , Jerusalem and Mecca. These differences and similarities are the basis of two completely different, but very similar religions, and give each a unique insight into spirituality and the act of being.