Bunyan's collection of fascinating poems use nature to communicate spiritual truths. Originally written in 1724 by the prominent author of Pilgrim's Progress, this collection exposes man's sin nature. Bunyan contrasts the love of Christ with the deception of the evil one. I love this book.
Sample of poem from page 86 of book:
The Master Caring for the Candle
We manage candles when they take the fire;
God manages the men his grace inspires.
And biggest candles give the better light,
As grace on biggest sinners shines most bright.