Charles H. Spurgeon on Psalms 60:2

It shaketh. That is, presaging nothing but ruin and downfall, unless it be speedily underpropped, and the breaches thereof made up and healed. Thus did David look upon Israel's disease, and hereupon it was that he was so deeply affected with it, so earnestly desiring the cure of it. The reference, as interpreters conceive, is to those homebred divisions, those civil wars betwixt the two houses of Saul and David, after the death of Saul: then did the "earth, "the land, that land of Israel (as the Chaldee explains it), quake and tremble, being broken, riven (as the word in the original signifieth): even as the earth sometimes by earthquakes is riven, and torn asunder with prodigious chasms, openings, or gapings: so was that kingdom divided in those civil commotions, the nobles and commons taking parts and siding, some with David, some with Ishbosheth. John Brinsley.