All the land - The second invasion of Shalmaneser (723 B.C., his fifth year), is here contrasted with the first, as extending to the whole country, whereas the first had afflicted only a part.
Three years - From the fourth to the sixth of Hezekiah, and from the seventh to the ninth of Heshea; two years, therefore, according to our reckoning, but three, according to that of the Hebrews. This was a long time for so small a place to resist the Assyrians but Samaria was favorably situated on a steep hill; probably Sabaco made some attempts to relieve his vassal; the war with Tyre must have distracted Shalmaneser; and there is reason to believe that before the capture was effected a revolt had broken out at Nineveh which must have claimed Shalmaneser’s chief attention, though it did not induce him to abandon his enterprise.