477CM
ZEAL is that pure and heavenly flame
   The fire of love supplies;
While that which often bears the name
    Is self in a disguise.
 
2  True zeal is merciful and mild,
    Can pity and forbear;
The false is headstrong, fierce, and wild,
    And breathes revenge and war.
 
3  Zeal has attained its highest aim,
    Its end is satisfied,
If sinners love the Saviour’s name,
    Nor seeks it aught beside.
 
4  But self, however well-employed,
    Has its own ends in view,
And says, as boasting Jehu cried,
    ‘Come, see what I can do.’
 
5  Self may its poor reward obtain,
    And be applauded here;
But zeal the best applause shall gain,
    When Jesus shall appear.
 
6  Dear Lord, the idol ‘self’ dethrone,
    And from our hearts remove;
And let no zeal by us be shown,
    But that which springs from love.
 
John Newton, 1725-1807