John Trapp on Isaiah 10:7

Ver. 7. Howbeit he meaneth not ſo] He is otherwiſe minded and affected then I am; and doth my will merely beſide and againſt his own will. As in applying of leeches the Phyſician ſeeketh the health of his Patient, the leech only the filling of his gorge: ſo is it when God turneth looſe a bloody enemy upon his people. He hath excellent ends which they think not on.

But it is in his heart to deſtroy and cut off] This was to exceed his Commiſſion, which was only to take the ſpoil, and to take the prey, ver. 6. not to cut off Nations, and to make havock of all. How much better our King Edward the Confeſſor, Camd. Rem. p. 214. who when his Captains promiſed for his ſake, they would not leave one Dane alive, thought it better to lead a private and unbloody life, then to be a King by ſuch bloody butcheries? Of Charls 5. Emperour we read,Parei Hiſt. prof. Med. p. 895. that when Antonius Leva and other of his chief Commanders commended Alexander the Great, and Julius Caeſar for their great exploits in over-running and deſtroying nations not a few, to their great renown; and on the other ſide complained that Charls made not the like uſe of his power and victories as he might and ought to do for ſuch a purpoſe: he gravely replyed, that Alexander and Julius had in waging wars nothing elſe to aime at beſides Honour and glory: but that Chriſtian Princes were in all their enterprizes to mind the glory of God, and the ſalvation of their own ſouls.