Although the terms and phrases he used were not familiar to him, Aziel knew that this was it. The energy he was referring to was the [Aether], that small seed that Jake somehow successfully cultivated inside the depths of his soul. This was the missing piece of the puzzle that Aziel needed.
The knowledge he so desperately required to finally finish building up spiritual veins and finally push all his troubles behind and breakthrough. From the memories he had gained so far, Aziel understood that some of the central part, a core of some kind was missing, but he just couldn't understand what to do or how to get started with that.
Still, Aziel knew that once he achieves this step, he would elevate himself from the constraints of mortals, not just with his ever-evolving physique but with spirit and mind also.
Trying his best to not show his excitement on his face, he retained a calm, collected outlook, silently contemplating Jake's narration of the events.