11 As for you, O LORD, you will not restrain your mercy from me; your steadfast love and your faithfulness will ever preserve me! 12 For evils have encompassed me beyond number; my iniquities have overtaken me, and I cannot see; they are more than the hairs of my head; my heart fails me. —Psalm 40:11–12
The 40th psalm opens in praise and morphs into petition. Or, we might say we have a petition prefaced by praise, but not in a forced, unnatural, manipulative way. The petition doesn’t betray a hypocrisy in the praise, rather, the sincere praise speaks to righteousness of the plea. Laud is a good warm up for lament. Just as it was a lament heard that let birthed laud (v. 1), so laud now lays the way for lament—the kind of lament that is heard. Petition has led to praise and now praise prefaces petition.
From praise for past deliverances David will turn to petition for his present distress. The experience of previous deliverance prepped David to plea with praise on his lips. Deliverance in this life isn’t prep for a life of ease. It is prep to meet the next trial with grace. The result: praise doesn’t simply follow petition answered, it is mingled with petition given.
In Lewis’ The Horse and His Boy we find said boy, Shasta, exhausted from completing one good and hard work quickly be given another. At this, we’re told Shasta’s heart grew faint and he was in turmoil at the cruelty of such a demand. The narrator explains, “He had not yet learned that if you do one good deed your reward usually is to be set to do another and harder and better one.” Here, David, no longer a boy, receives such a trial with greater dignity. Where did David learn such grace? Through the grace of trials. The cycle of petition and praise led to their blurring of lines and the mingling of one with the other. This is a cycle that will persist in this life as we say, “Praise be! Jesus has come!” and “Come Lord Jesus!” This cycle will persist until that ultimate lament gives birth to eternal laud.