14 From men which are thy hand, O Yahweh, from men of the world, which have their portion in this life, and whose belly thou fillest with thy hid treasure: they are full of children, and leave the rest of their substance to their babes.
David was king of a prosperous and successful nation. He subdued all his enemies round about, and enjoyed all the power and wealth and respect that natural man could wish. But he was never a "man of the world having his portion in this life." God was too real to him.
He was too simple and genuine and unaffectedly humble. Weak though he was, these were the basic qualities of his heart, and he was chosen as the most suitable medium for the recording of the Psalms. They are far more than David's thoughts, but David was the one whose mind was most in tune with them.
15 As for me, I will behold thy face in righteousness: I shall be satisfied, when I awake, with thy likeness.
Many of the holy garments portrayed in the Psalms are far too large to fit David, but David, more than any other, burned with a realisation of the infinite desirability of the full stature of the perfect man in Christ Jesus.