Book III, 19: On the holy Scriptures

Why did our blessed Saviour please to breake
His sacred thoughts in Parables; and speake
In darke Enigma's? Whosoere thou be
That findst them so, they were not spoke to Thee:
In what a case is he, that happs to run
Against a post, and cries, How dark's the Sun?
Or he, in Summer, that complaines of Frost?
The Gospell's hid to none, but who are lost:
The Scripture is a Ford, wherein, tis said,
An Elephant shall swim; a Lambe may wade.