Arise ye, and depart. The prophet pronounces the oppressors' punishment—they shall be banished from their land, even as they have torn others from their home. This is not your rest. Canaan had been given as a resting place to Israel (Deuteronomy 12:9, Deuteronomy 12:10; Joshua 1:13; Psalms 95:11), but it should be so no longer.
Because it is polluted. The land is regarded as polluted by the sins of its inhabitants. The idea is often found; e.g. Le 18:25, 28; Numbers 35:33; Jeremiah 2:7. It shall destroy you, even with a sore destruction.
The land is said to destroy when it ejects its inhabitants, as though the inanimate creation rose in judgment against the sinners. The Revised Version, with Keil and others, translates, Because of uncleanness that destroyeth, even with a grievous destruction; Septuagint, διεφθάρητε φθορᾷ, "Ye were utterly destroyed;" Vulgate, Propter immunditiam ejus corrumpetur putredine pessima.
The Authorized Version is correct.