[hesitates because he thinks maybe telling an angel this stuff is sort of like reporting back to God and once he does that he's not sure if it can be taken back. On one level he realizes it's a ridiculous idea but it's still there regardless of how ridiculous it is]

I-don't know? I killed her and the seal...Lucifer is coming. I'm sorry. I didn't mean to and I thought I was saving the world. I thought she was going to break it and if I killed her then she couldn't break it. I thought I was doing the right thing. She broke all those other seals so...I'm sorry.