Freemasonry is one of the worlds oldest fraternal societies. Ancient Freemasonrys lessons of moral values governing relations between people and its acknowledgement, without crossing the boundaries of religion, that all depends on the providence of God, apply today with as much force as they did when it took its modern form at the turn of the 17th century. Freemasonry has “secrets” used in proof of membership but it is not a secret society. Some of its internal affairs are private and Freemasons incline to reticence about their membership because they are taught not to use it to advance their own interests.
Although all Masons are required to profess and continue in a belief in a Supreme Being, and their ceremonies include prayers, Freemasonry is no substitute for religion: it has and can have no theological doctrines; it offers no sacraments, and does not claim to lead to salvation.
Read more via Masonic Network – What is Freemasonry.