"... One example of the reapplication of a proverb is Proverbs 26:27: “He who digs a pit will fall into it / and he who rolls a stone, it will return to him.” The context of the proverb is in a cluster of proverbs about the impact of the verbal wounder. His speech is a lethal weapon. But the verbal abuser faces adverse consequences in the end. His abusive ways will come back on him. The one who schemes against another will himself suffer the repercussions. The first line of this proverb is used in two other texts outside Proverbs. One is in Ecclesiastes 10:8 and the other is Psalm 7:15. In Ecclesiastes 10:8-9 the proverb is as follows: “He who digs a pit will fall into it / and whoever tears down a wall – a snake may bite. He who dislodges stones may be hurt by them / and he must take care who would chop down trees.” Most commentators say that Ecclesiastes chapter 10 is made up of a series of unrelated proverbs. However, they at least seem to be clustered in smaller units made up of two or three verses. Verses 8-11 may be one such cluster. Using a series of analogies the proverbs speak to the idea of retribution. Misconduct will bear its own fruit ..."

Bland, Dave L. A Rhetorical Perspective on the Sentence Sayings of the Book of Proverbs (p. 218) University of Washington, 1994