psalms 40:1 I waited patiently for the LORD; and he inclined unto me, and heard my cry. - Free Bible Online

      Ps 40:1-17. In this Psalm a celebration of God's deliverance is followed by a profession of devotion to His service. Then follows a prayer for relief from imminent dangers, involving the overthrow of enemies and the rejoicing of sympathizing friends. In Heb 10:5, &c., Paul quotes Ps 40:6-8 as the words of Christ, offering Himself as a better sacrifice. Some suppose Paul thus accommodated David's words to express Christ's sentiments. But the value of his quotation would be thus destroyed, as it would have no force in his argument, unless regarded by his readers as the original sense of the passage in the Old Testament. Others suppose the Psalm describes David's feelings in suffering and joy; but the language quoted by Paul, in the sense given by him, could not apply to David in any of his relations, for as a type the language is not adapted to describe any event or condition of David's career, and as an individual representing the pious generally, neither he nor they could properly use it (see on Ps 40:7, below). The Psalm must be taken then, as the sixteenth, to express the feelings of Christ's human nature. The difficulties pertinent to this view will be considered as they occur.

      1-3. The figures for deep distress are illustrated in Jeremiah's history (Jer 38:6-12). Patience and trust manifested in distress, deliverance in answer to prayer, and the blessed effect of it in eliciting praise from God's true worshippers, teach us that Christ's suffering is our example, and His deliverance our encouragement (Heb 5:7, 8; 12:3; 1Pe 4:12-16).
      inclined--(the ear, Ps 17:6), as if to catch the faintest sigh.

JFB.