Luke 20:44

“David therefore calls him Lord, and how is he his son?”

Now if this were the case, asks Jesus, how can He be limited to being described merely as David's son, when He is in fact declared to be David's Lord? Whatever else this therefore demonstrates it certainly reveals Jesus' exalted view of His own position as Greater than David, and as One Whom He declares to all who heard Him to be ‘David's Lord'. It thus reveals why He had the authority which gave Him the right to cleanse the Temple, which, following the examples of Hezekiah and Josiah, would be seen as a Messianic task. And all this in One Who walked humbly and graciously among men, with nowhere to lay His head. He made no attempt to ape His future glory.