The idea is that God, as the Christian describes Him, cannot exist, since a loving God would reveal Himself to the non-resistant non-believer and He does not. Therefore, such a loving God must not exist. I think this is a truly challenging argument, not only because it tackles what feels like a very real world issue (I admit) but because arguing against it can quickly put you into the position where you are no longer arguing so much about philosophy or logic but where you are pigeon-holed into a situation where people will think you are personally attacking individuals. In other words, when I say that humans are accountable to know that God exists, this argument can quickly turn things into the social foul of saying that people have bad motives or are otherwise insincere. What starts as a philosophical view of the apparentness of God's existence turns into a bullying situation where the Christian is painted as personally attacking others. I reject that framing but I realize that many will continue to see things in that perspective, sadly.
This is a short video and it doesn't get into all the issues related to "Divine Hiddenness." It only covers a couple aspects of it. Other arguments should be made about how apparent God's existence is and to address other issues. I hoped to simply do some work that would build a bit of a bridge past the sense of personal offense many feel on this issue and open them up to another way of seeing things.
Are you wondering what I would consider the STRONGEST argument against God? Well, in terms of persuasiveness, it would be the Problem of Evil.
I have a video on that right here.
My website: https://BibleThinker.org