I love these words of Dane Ortlund in his exposition and application of Psalm 6. In fact, I highly recommend this devotional resource:
David is in anguish. He is in the valley. Life is suffocating him, apparently because of interpersonal strife (v. 8). His very soul is in agony (v. 3). But this is a suffering that is physical too, affecting him to his very bones (v. 2). We are given a portrait of David alone on his couch, weeping like a baby. His life has gone into meltdown.
Through it all, to make matters worse, he is keenly aware of his own sin and guilt, as evident from his opening words, in which he asks the Lord to withhold his heavenly rebuke and discipline.
Where does David go in such distress?
“The Lord has heard my plea; the Lord accepts my prayer” (v. 9).
Amid the storm of his life, David looks not out, at his circumstances, nor in, at his own internal resources, but up, to the Lord of mercy.
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Dane C. Ortlund, In the Lord I Take Refuge (p. 23). Crossway. Kindle Edition.