Daniel 10:11-12

And he said to me, "Daniel, man of longing, understand the words that I speak to you, and stand yourself upright, for I am now sent to you." And when he had said these words to me, I stood trembling. And he said to me, "Do not be afraid, Daniel, because from the first day that you set your heart to understand, by afflicting yourself in the sight of your God, your words have been heeded, and I have arrived because of your words.