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

  1. Existence of God
  2. Oneness of God
  3. Non-physicality of God
  4. God is the creator of everything
  5. There is prophecy
  6. Moshe's prophecy was unique
  7. Torah is divine
  8. Torah doesn't change
  9. God is omniscient
  10. There is reward and punishment
  11. Mashiach will come
  12. The dead will be revived[1]

Obligation to Believe

Proving the Existence of God

Ramification of Disbelief

  1. A person who does not believe in any of the 13 principles of faith loses their share in Olam Haba. [2]

Sources

  1. Pirush Mishnayot (Sanhedrin 10:1)
  2. Pirush Mishnayot (Sanhedrin 10:1), Rambam Teshuva 3:6-8