Since the main puzzle wasn't solved in the actual game, let's see if you'll manage it without having to deal with false or edited clues.

Here's all the clues:
The High Priest is a blight on our place of worship. He knows not of what he speaks. Everything he teaches us - his disciples - about the rites is the opposite of what it should be. He makes a mockery of our faith and I won’t stand for it. All they tell is lies. Bishop is the only one worthy of trust. Tomorrow I shall bring the charlatan’s demise and take the reins to set things right.
Our Lord shall return.
It has been written.
The wicked shall burn.
The righteous are smitten.
Ammon the wicked.
Betrayer of Bhaal.
Tis time he was silenced.
Fore he ruins us all.
-Grobnar the Great
Raise your warhammer and crush the Skull of a Man. This is done in the ritual of Death. When performing this ritual, never speak the following words.
“From serf or foe, for justice or vengeance, tis all the same. When the threads of mortality are shattered and carnage bestowed from one mortal upon another, honour is brought to our Lord.”
-Khelgar
An Obsidian Dagger is used for either the ritual of Evil or the ritual of Retribution, I can’t remember exactly which! I know what to say when I use it though:
“Bhaal strikes unerringly, and where his blades strike, men wither and die. Eventually, all must cease to exist in the Prime. Some more abruptly than others.”
-Neeshka
For the ritual of Destruction, one should wear an amulet adorned with black gemstones. The Ruby amulet is used along with the Crimson Candles.
-Casavir
The following words are best said before the altar of Destruction.
“The Broken Ones weep tears of blood in our moment of triumph. For when their hallowed halls crumble to dust, even they lack the strength to resist the darkness of the void inside of their hearts.”

Do not accompany these words with the wrapping of a Bramble Branch around your forearm, for that would be heresy.
-Sand
Neither the ritual of Evil nor the ritual of Retribution is performed inside a circle of Crimson Candles. The phrase that is spoken within such a circle contains less than 35 words.
-Elanee
The Obsidian Dagger and the Obsidian Amulet are used together in the same ritual.

A golden amulet adorned with Emerald is worn while performing a ritual that requires a weapon.
-Qara
Know that the Obsidian Amulet is not in any way associated with the phrase of Sand.
-Zhjaeve
The amulet with Emeralds is worn by the avenger in the ritual of Retribution.

The Obsidian Dagger is a tool of Death.
-Bishop
There were also some clues in the puzzle chat RPs. All that's relevant is still accessible to you because it was quoted in the day chat. For now I will not point out what exactly you should be looking for. I might do so if it looks like you need more hints.