A quote

"If you are a child of God then you are certainly going to be disciplined, because God is preparing you for holiness. He is not an indulgent father who hands out sweets indiscriminately and does not care what happens to us. God is holy, and He is preparing us for Himself and for glory; and because we are what we are, and because sin is in us, and because the world is what it is, we must needs be disciplined. So He sends us trials and tribulations in order to pull us up, and to conform us to 'the image of His Son'."
-Martyn Lloyd-Jones

Playing around with sin....

“Be careful how you treat God, my friends. You may say to yourself, ‘I can sin against God and then, of course, I can repent and go back and find God whenever I want him.’ You try it. And you will sometimes find that not only can you not find God but that you do not even want to. You will be aware of a terrible hardness in your heart. And you can do nothing about it. And then you suddenly realize that it is God punishing you in order to reveal your sinfulness and your vileness to you. And there is only one thing to do. You turn back to him and you say, ‘O God, do not go on dealing with me judicially, though I deserve it. Soften my heart. Melt me. I cannot do it myself.’ You cast yourself utterly upon his mercy and upon his compassion.”

- D. Martyn Lloyd-Jones, Revival (Westchester, 1987), page 300.