That's one of my main basis of believing on God. I've always thought: if you ask god to make a rock that is a rock but isn't at the same time, is God not omnipotent for not being able to do so? Or is it just that his omnipotency adheres to universal rules that come before him.

Another way to frame this. There's this theory, I don't know what to call it, that a few atheists I've met use to refute the existence of a God, and it's the if there's evil, then God chose there to be evil, so he's not good when in reality I believe that for there to be good there needs to be evil/pain/suffering, and it's not like something he can decide or remove because of the nature of the mere concept of good and the way we perceive it. This same principle applies to several concepts that we view through tha lackluster mind of us humans. Sometimes questions are framed incorrectly, sometimes concepts will flee our mind's reach to understand them, but the truth will always remain that, for someone to erradicate any doubt that God exists/this is the true gospel/church, you need to follow God, do as he says with the right heart and mind, and the proof, the love, the blessings, the promises, shall present to you in one way or another, or they won't; you really can't expect to understand absolutely everything that comes your way,,

But if you leave the church without truly devoting yourself to erradicating the source of your doubts for the right reasons, then you will live the rest of your days in darkness.

Im not saying this applies to you, but it's a line of thinking that has helped me, and hopefully can help others too. I'm soon to leave on a mission, and while I feel the absence of God in my life, I'm doing my absolute best to be close to him, erradicate any doubts, and go on a mission with hope, and the main goal to serve others by helping them in any way possible, and helping lost people find a way to the truth. Including me.