AD&D - Changing up how Clerics get spells?

In Dragon Magazine #92, Gary Gygax wrote and article discussing that the way Cleric's get their spells isn't really written in stone and you as the DM can change it up a bit. Clerics and druids have access to all spells without needing spell books, as their powers are granted by their deities. While the rules allow flexibility, experienced Dungeon Masters may alter these to enhance gameplay. The balance of power is crucial, allowing for the removal or addition of spells based on character faithfulness and the campaign’s needs. This can lead to interesting dynamics, such as withholding spells from unfaithful clerics or druids. Highlights -📜 Clerics and Druids’ Spells: Access to all spells without spell books. DM Flexibility: Experienced Dungeon Masters can modify rules for better gameplay. Balance is Key: Maintaining game balance is crucial when altering spells. Faithfulness Matters: Rewards and penalties based on character faithfulness. Spells Can Be Withheld: Justifiable reasons exist for withholding spells from characters. Druidic Abilities: Druids have specific abilities based on their deities. Character Dynamics: Faith and adherence impact character powers significantly.