Yale was expecting that answer from Revgen's because despite being talented with the Life Law since the start, he had never had too much talent in the Death Law.
However, Yale saw how quickly he solved the problem of Ange, and since the solution was removing something that could harm a soul, even though the Life Law was useful, it couldn't compare with the Death Law that focused on souls.
Thus, Yale had the intuition that Revgen had trained the Death Law since the moment he had healed Ange, but it wasn't until Yale heard about the reincarnation method of a Law God of Life and Death that he understood his intentions.
"Don't force yourself too much; you know that the Death Law isn't easy."
Yale said those words unconsciously, that was exactly what Liye would have said to Revgen in that situation. Liye had said almost the same words when Revgen started to train the Life Law, but Yale didn't remember about it.
