Psa 110:1 A Psalm of David. The LORD said unto my Lord, Sit thou at my right hand, until I make thine enemies thy footstool.
Psa 110:2 The LORD shall send the rod of thy strength out of Zion: rule thou in the midst of thine enemies.
So many of the Psalms speak of the coming Messiah! David was a Prophet in deed. Maybe he is not referred officially as a prophet, but this man prophesied so many things. Many of his prophecies were about the Messiah.