[Y]ou have to stop loving and pursuing Christ in order to sin. When you are pursuing love, running toward Christ, you do not have opportunity to wonder, *Am I doing this right?* or *Did I serve enough this week?* When you are running toward Christ, you are freed up to serve, love, and give thanks without guilt, worry or fear. As long as you are running, you're safe.
Not being able to fully understand God is frustrating but it is ridiculous for us to think we have the right to limit God to something we are capable of comprehending. What a stunted, insignificant god that would be! If my mind is the size of a soda can and God is the size of all the oceans, it would be stupid for me to say He is only the small amount of water I can scoop into my little can. God is so much bigger, so far beyond our time-encased, air/food/sleep-dependent lives.
Jesus didn't speak of hell so that we could study, debate and write books about it. He gave us these passages so that we would live holy lives. Jesus evidently hates it when we tear into our brothers or sisters with demeaning words, words that fail to honor the people around us as the beautiful image-bearing creatures that they are.