The Mitzvah to Believe and the Principles of Faith
From Halachipedia
The Rambam has 13 principles of faith that a person must believe in. Part of the definition of Orthodoxy is having belief in certain fundamentals of faith. These principles are necessary and are building blocks for most other hashkafa's and values in Torah.
The Beliefs
- Existence of God
- Oneness of God
- Non-physicality of God
- God is the creator of everything
- There is prophecy
- Moshe's prophecy was unique
- Torah is divine
- Torah doesn't change
- God is omniscient
- There is reward and punishment
- Mashiach will come
- The dead will be revived[1]
Obligation to Believe
Proving the Existence of God
Ramification of Disbelief
- A person who does not believe in any of the 13 principles of faith loses their share in Olam Haba. [2]