The truly simple way of presenting Christianity is to do it.

It is human self-renunciation when a man denies himself and the world opens up to him. But it is Christian self-renunciation when he denies himself and, because the world precisely for this shuts itself up to him, he must as one thrust out by the world seek God's confidence. The double-danger lies precisely in meeting opposition there where he had expected to find support, and he has to turn about twice; whereas the merely human self-resignation turns once.

Prayer does not change God, but it changes him who prays.

...it is not the obscure passages in Scripture that bind you but the ones you understand. With these you are to comply at once. If you understood only one passage in all of Scripture, well, then you must do that first of all. It will be this passage God asks you about. Do not first sit down and ponder the obscure passages. God's Word is given in order that you shall act according to it, not that you gain expertise in interpreting it.

I feel as if I were a piece in a game of chess, when my opponent says of it: That piece cannot be moved.

You wanted God's ideas about what was best for you to coincide with your ideas, but you also wanted him to be the almighty Creator of heaven and earth so that he could properly fulfill your wish. And yet, if he were to share your ideas, he would cease to be the almighty Father.

I would have perished had I not perished.