John Trapp on Psalms 55:9

Verſ. 9. Deſtroy O Lord, and divide their tongues] Heb. Swallow them up, O Lord, and divide their tongues; by an alluſion, as ſome conceive, to thoſe two famous Judgements of God upon Dathan and Abiram, firſt, Numb. 16. and then, ſecondly, upon the Babel-builders, Gen. 11. both which were thrown out for examples, to all ſucceeding ages, (as St. Jude ſaith of the Sodomites, Jud. 7.) and are to be conſidered of by the Saints, as here in their prayers againſt their enemies. How God anſwered this prayer of David, ſee 2 Sam. 17.1. &c.

For I have ſeen violence and ſtrife in the City] i. e. In Jeruſalem, ſomething I have ſeen, but more outrages I have heard of, ſince Abſolom with his army came into it. The rude ſouldiers plunder the poor Citizens at pleaſure; and cannot agree among themſelves in dividing the ſpoil.