Whenever I doubt God's love or existence (the former happens much more frequently than the latter), I don't think about the crucifixion, as numerous sermons and books have advised me to do. I think about the stars.
For one thing, the stars are always less than twelve hours away and visible from any location. You just can't miss them, whereas I could have missed the crucifixion if I had been born in a time or place that didn't have the Gospel. For another thing, the stars are too tangible for their existence to be doubted, whereas I can doubt the crucifixion when I'm feeling particularly intractable.
The stars tell me a lot about how God does things. He likes beauty, because the stars are dazzlingly lovely. And He's extravagantly good. I just can't imagine how much time and thought it took to make trillions of stars, all over the universe, with different gravitational fields and sizes and ages, so that there could be this one little planet on which He would put this one little person called Me.