"Doth Not Even Nature Itself Teach You?"

 
Nature to the mind attentive,
Teaches oft a hidden truth,
Even by a tiny insect,
Speaking to our heart's reproof.
Many a different plant will furnish
Daily food the insect needs,
But it always takes the color
From the leaf whereon it feeds.
Christians, from the bread of heaven,
Oft-times turn to earthly fare,
But a tell-tale change of color,
To their shame, they always wear.
If on Christ, the Lamb, we're feeding,
We'll present a heavenly blue,
But the taste of earthly follies,
Changeth to another hue,