He will be great, and will be called the Son of the Most High. The Lord God will give him the throne of his father, David,
His father David - David is called his father because Jesus was lineally descended from him. See Matthew 1:1. The promise to David was, that there should “not fail” a man to sit on his throne, or that his throne should be perpetual 1Ki 2:4; 1 Kings 8:25; 1Ki 9:5; 2 Chronicles 6:16, and the promise was fulfilled by exalting Jesus to be a Prince and a Saviour, and the perpetual King of his people.