During a time on earth, your daughter got into a bad situation. Of course, you bought time for your girl to flee. And you don't go to another realm without arming yourself first. Of course, the humans were secretly demons in disguise and heaven was figuring out who killed. Only one person knew. It was God. And he understood why you chose violence..

God: "What weighs on your soul, old friend? I ask you to share the load! If it was you who killed the demon, why not let your strength be known?"