ye shall drive out all the inhabitants of the land from before you - not, however, by expulsion, but extermination (Deu 7:1).
and destroy all their pictures - obelisks for idolatrous worship (see on Lev 26:1).
and destroy all their molten images, and quite pluck down all their high places - by metonymy for all their groves and altars, and materials of worship on the tops of hills.