User blog comment:B214/Question and Answers 3/@comment-24098614-20140716073728/@comment-24098614-20140716075455

The reason I say this B214 is that Angels are rather strict and morally upright, and I don't think that Michael would find what Issei did to Gabriel very funny because it would be enough for him to either imprison him or send a Holy spear to his body because to a Angel this is offensive remember he still follows the teachings of God, and he is lucky that Michael is lenient because if that was God Issei would be killed on the spot for what he did.

The thing he did takes a lot of guts to do because you are doing this to one of the most powerful Angels in Heaven, and this lady has enough power in her finger to kill Issei without a problem she is considered a Ultimate Rank in power, and her Holy Powers can kill Issei without a problem.