Hosea 6:8

Gilead; one of the six cities of refuge, situate in the country of that name, on a high hill, whence it is called Ramoth-gilead: now as a city of refuge it was a city pertaining to the priests and Levites, as all the cities of refuge did, in what tribe soever they were, Numbers 35:6.

Is a city of them that work iniquity; a sacerdotal city, where priests did, and religion, i.e. knowledge of God and mercy to man, should, dwell; but Gilead is a city full of most notorious transgressors, the inhabitants, though Levites and priests, are a generation of men that work all manner of wickedness.

And is polluted with blood; murders committed there have polluted it, or murderers protected there against the law of God, who provided these cities a relief for such as unawares, without malice, by chance slew his neighbour, not for wilful murderers; yet these for money or interest got in and were secured there; and probably many were kept out or delivered up to the avenger of blood contrary to the law: thus Gilead by name, and all the rest of the cities of refuge intended too, were polluted with blood.