Supposedly, God is omnipotent, omniscient, omnipresent, and omnibenevolent (all-good).
Since we're focusing on the last one, there's supposedly the problem of evil for the last one.
My church is splitting due to the whole gay thing. My cat is probably dying (no eye in one eye, blurry eyed in another, can't eat much and stumbling around). And despite spending money advertising and despite being pretty okay in terms of skill with self-employed gig, I can't seem to break through (most calls I do get about computers are either solicitations to phish for my info, calls that are for problems completely out of my depth like making actual glass for the computer, or people who call when I'm visiting family for Christmas).
I'm not gonna discuss how much of this I could probably fix, but rather use it as an object lesson for the study of whether God is all-good or not.
To me, I'm pretty certain God exists (not only from the personal changes in my life, but also because of philosophical reasons), but right now I'm only not sure how good he is. In fact I'm pretty mad at God.