God's Word compared to Dew

AS Dew doth insensibly fall,
So doth God's gracious Word
Invisibly op'rate in us,
As we have often heard.

How sweet are Dews unto the Herb,
It makes them richly smile;
So doth thy Word bedew oft-times
Thy own true Israel.

It makes our Graces to send forth
A rare and fragrant scent,
Which doth delight the holy One,
The Lord omnipotent.

But Dews will not, Lord, always do,
Mens hearts so barren are;
Some soaking showers they must have,
If any Fruit they bear.

All praise and glory unto God
Who wisely orders things,
That as our wants and needs appear,
His Mercies flow like Springs.