Over against the growling of the dogs, the author wants to sing of the Lord’s strength. Over against the prowling dogs in the darkness (Psalm 59:6 and Psalm 59:14), he wants to sing in the morning of the Lord’s faithfulness. He has nothing to do with darkness. His day starts well this way—with the Lord’s name on his lips (over against Psalm 59:12 which mentions the sin, pride, lies, and cursing on the lips of the enemy).
16 But I will sing of your strength; I will sing aloud of your steadfast love in the morning. For you have been to me a fortress and a refuge in the day of my distress.