Everything described within the Scriptures happened, all things. From the beginning of creation, to the fall of man and woman by the eating from the tree, to the Exodus of the Father's people, to the wall of Jericho, to the coming of the Son of the Father as a sacrifice for our sins, to His resurrection and Ascension, to all which came afterward in things not even included in the Holy Doctrine, by the Saints and Martyrs.
It takes faith and believing in the truth written of the Prophets in the Spirit, and not believing in men who are pretenders of the people of the Father; the ones calling themselves Jews(Jacob) who deny the Father and the Son are really Esau, so of course they'd say the truth isn't the truth.