Raphael wanted to stop Azekiel. He even thought that he was succeeding in convincing Azekiel to stop the plan of using Soul Snatch on Alion. Still, unfortunately, he was somewhat too optimistic, especially when Lia agreed with him. Even he hadn't expected that Azekiel was going to refuse his suggestion and Lia's.
Normally, there was Gluttony of Knowledge on his first kill, which worked right before the Soul Energy started transferring. It was the same even this time as well.
[Gluttony of Knowledge activated]
A flood of memories started rushing inside the head of Azekiel, overwhelming his own mind. The memories were just too many. It was as if the man had lived for thousands of years and had seen so much that it was too overpowering for Azekiel's head.