II Samuel 7:18
Then King David went in and sat before the Lord, and said, "Who am I, O Lord God, and what is my house, that you have brought me thus far?"

Thomas à Kempis (ca.1380 – 25 July 1471) was a late Medieval Catholic monk and probable author of The Imitation of Christ, one of the best known Christian books on devotion. While contemplating this same question, first asked by David, Kempis wrote, "My Lord Jesus, I beseech you, do not be far from me, but come quickly and help me, for vain thoughts have risen in my heart and worldly fears have troubled me sorely. How shall I break them down? How shall I go unhurt without your help?"

The paradox of faith. I know you are there. Are you still there, Lord?