It can be a deep rabbit hole! After researching it for 50 or so hours, I came across a video where James White says that it's one of the most difficult doctrines, because of how intertwined it is with other aspects of the faith (e.g. the atonement). All that research didn't do much to change me from my position either, but at least I have a better sense of what the arguments are and the scriptures that support them. Be blessed!