And he said unto me, O Daniel, a man greatly beloved, understand the words that I speak unto thee, and stand upright: for unto thee am I now sent. And when he had spoken this word unto me, I stood trembling.
A man greatly beloved - (Daniel 9:23, note). So 'David' means one beloved; because he was the "man after God's own heart" (1 Samuel 13:14).
Understand the words - attend to them. See Daniel 8:17-18.