Psalms 7:15

"He hath made a pit, and digged it.

And is fallen into the ditch which he made.

His mischief shall return upon his own head,

And his violence shall come down upon his own pate."

Haman made a gallows upon which he planned to hang Mordecai, but it was Haman himself who was hanged there; and many another wicked man has experienced exactly the same kind of retribution.

It is of interest that Spurgeon in his "Treasury of David" interpreted these lines of God Himself; but the words "If a man turn not" in Psalms 7:12, it seems to this writer, require the understanding of the passage as indicated here.