The love of Christ shed abroad in the heart. 
 
Eph. 3:16ff.  
 
Come, dearest Lord, descend and dwell 
By faith and love in every breast; 
Then shall we know, and taste, and feel 
The joys that cannot be expressed. 
 
Come, fill our hearts with inward strength, 
Make our enlarged souls possess, 
And learn the height, and breadth, and length 
Of thine unmeasurable grace. 
 
Now to the God whose power can do 
More than our thoughts or wishes know, 
Be everlasting honors done 
By all the church, through Christ his Son.
Isaac Watts
http://www.poemhunter.com/poem/hymn-135/