John Trapp on Proverbs 26:27

Verſ. 27. Whoſo diggeth a pit, ſhall fall thereinto] This is the ſame with Pſal. 7.15. Where-hence it ſeems to be taken. See the Note there. Heathen writers have many Proverbs to like purpoſe. See Eraſm. Chiliad.

And he that rolleth a ſtone, it will return upon him] Cardinal Benno relates a memorable ſtory of Pope Hildebrand, or Greg. 7. that he hired a baſe fellow to lay a great ſtone upon a beam in the Church, where Henry 4. the Emperour uſed to pray, and ſo to lay it, that it might fall (as from the top of the Church) upon the Emperours head, and kill him. But whilſt this Caytiff was attempting to doe it, the ſtone with its weight drew him down, and falling upon him, daſhed him in peeces upon the pavement. The Thracians in Herodotus being offended with Jupiter for raining unſeaſonably upon them, ſhot up their arrows at him, which ſoon after returned upon their own pates.