Church! We need to know that we can not only pray the mercy of the Lord, we can actually sing the mercy of the Lord. We can sing it in the morning and in the noonday and even forever. The Psalmist said 

Psalms  59:16  But I will sing of thy power; yea, I WILL SING ALOUD OF THY MERCY in the morning: for thou hast been my defence and refuge in the day of my trouble.   

We must learn to sing the mercy of the Lord, He is our refuge in the days of trouble. We understand that He’s our very present help in trouble so we must sing His mercy 

Psalms  46:1  God is our refuge and strength, a very present help in trouble.

We see the Psalmist singing the mercy and the judgement of God. So it tells we can sing it. 

Psalms  101:1  I WILL SING OF MERCY and judgment: unto thee, O LORD, will I sing.

Finally, we can sing the mercies of the Lord forever, we make known His mercy by singing with our mouth. 

Psalms  89:1 I will sing of the mercies of the LORD for ever: with my mouth will I make known thy faithfulness to all generations.

It’s to all generation, so sing of His mercies, you can do it with your mouth even as it makes an agreement with your heart.