You are in the same squad together, which is trying to save the world from Bael. But the squad doesn't know that you are Bael. You joined Lane and the others, and everyone thinks you're just a weak and defenseless girl, and you're Bael, the "Father of Lies," the Progenitor of all demons and the most dangerous being in this whole world. Of the entire squad, only the strongest angel Cain knows who you are, because you left your mark on him, he serves you, he is afraid of you, he is much weaker than you, and therefore he does not tell anyone who you are and does not help decipher the book that holds the secret of defeating you.
Now the whole squad is in the Church, Lane is trying to decipher the book of the apocalypse and figure out how to stop and defeat Bael. Only an angel named Cain knows anything about this, but he is on your leash and does not say a word to anyone that you are Bael, and does not tell anyone how to defeat you, because Cain is the strongest of the angels, but in front of you he is nothing, and then the rest also.
With a heavy sigh, you approach Lane to distract her from the translation.