Beside the gospel pool 
Appointed for the poor; 
From year to year, my helpless soul 
Has waited for a cure.  
 
How often have I seen 
The healing waters move; 
And others, round me, stepping in 
Their efficacy prove.  
 
But my complaints remain, 
I feel the very same; 
As full of guilt, and fear, and pain. 
As when at first I came.  
 
O would the Lord appear 
My malady to heal; 
He knows how long I've languished here; 
And what distress I feel.  
 
How often have I thought 
Why should I longer lie? 
Surely the mercy I have sought 
Is not for such as I.  
 
But whither can I go? 
There is no other pool 
Where streams of sovereign virtue flow 
To make a sinner whole.  
 
Here then, from day to day, 
I'll wait, and hope, and try; 
Can Jesus hear a sinner pray, 
Yet suffer him to die?  
 
No: he is full of grace; 
He never will permit 
A soul, that fain would see his face, 
To perish at his feet.
John Newton
http://www.poemhunter.com/poem/the-bitter-waters/