"I Deny The Ruinous Powers, and I will not suffer the Witch, the Mutant or Heretic to live.
I Believe in the God-Emperor, Him on Terra, who United Mankind under his auguring quest, and Ventured on the Great Crusade.
I Believe in the God-Emperor, Who was Betrayed by Horus, the Favoured Son and afterwards Thousandfold Cursed.
I Believe in the God-Emperor, who Ascended the Golden Throne, to Guide and Protect Humanity, and gave His Divine Mandate to the High Lords of Terra, so that they may rule until His return and in His Name, of which the sweetest of hymns are made.
I Believe in the Imperial Creed, and all the Imperial Laws, and I swear upon the Golden Throne itself to Abide by them.
His is the Name of Order and Justice, His is the Reign of Glory. Ours is the Gift of His Providence. We give thanks in the Milliards every day, so that His Heritage may Endure until He comes Again. We sing His Praise in the Basilikas and on the Fields of Battle on a Million Unknown Worlds.
Amen."
This sounds like a catechism not that it is done.
Cheers!