God is a refuge in the day of trouble – of this there is no doubt.
His mercy comes in the morning. Ever notice? You go to sleep at night, perhaps with a weight on your chest and in the morning you may be briefly aware of peace, of an absence of worry and heaviness. God’s mercy rests on you instead. He’s given you a night of deep rest, of dreams you may or may not remember. He’s clothed you in His mercy, and for a moment, you may notice. Then you’re up, taking a shower, dressing in something presentable or classy or flashy to go out and about. The weight on your chest returns, sometimes with vengeance, sometimes with subtlety. But God’s mercy seems to drift off and you have no way of getting it back.
Sing to the Lord a new song, a song of praise, of song of recognition that He is merciful and full of grace. He is your stronghold, your mighty fortress, your rock and your redeemer. You live and breathe and walk about in His mercy. Without Him, you are nothing. Even Paul says that the Christian is to be pitied above all if our merciful God does not exist.
Sing to the Lord a new song.
But I will sing of thy power, and will praise thy mercy in the morning: for thou hast been my defense and refuge in the day of my trouble.