O God, my heart is fixed; I will sing and give praise, even with my glory.
All Commentaries on Psalms 108:1 Go To Psalms 108
Augustine of Hippo
AD 430
2. We are taught by this Psalm, that those titles which seem to refer to history are most rightly understood prophetically, according to the object of the composition of the Psalms. ...And yet this Psalm is composed of the latter portions of two, whose titles are different. Where it is signified that each concur in a common object, not in the surface of the history, but in the depth of prophecy, the objects of both being united in this one, the title of which is, "A Song or Psalm of David:" resembling neither of the former titles, otherwise than in the word David. Since, "in many places, and in diverse manners," as the Epistle to the Hebrews saith, "God spoke in former times to the fathers through the Prophets;" yet He spoke of Him whom He sent afterwards, that the words of the Prophets might be fulfilled: for "all the promises of God in Him are yea."
