The words which the Lord hath cried by the former prophets - הראשנים נביאים nebiim harishonim, is the title which the Jews give to Joshua, Judges, the two books of Samuel, and the two books of Kings.
The latter prophets, אחרונים נביאים nebiim acharonim, are Isaiah, Jeremiah, Ezekiel, and the twelve minor prophets.
The hagiographa, כתובים kethubim, holy writings, are the Psalms, Proverbs, Job, Song of Solomon, Ruth, Lamentations, Ecclesiastes, Esther, Daniel, Ezra, Nehemiah, and the two books of Chronicles. But the above words, the former prophets, seem to apply to Isaiah, Jeremiah, and Ezekiel.
The south and the plain? - From Eleutheropolis to the sea, Obadiah 1:19. The south was the wilderness and mountainous parts of Judea: and the plain, the plains of Jericho.
Should ye “not hear” the words, or, Know ye “not the words?” The verb is presupposed in the emphatic question, as in, “Shall I, the blood of these men?” 2 Samuel 23:17. David omits the word “drink” for abhorrence.
By the former prophets - Isaiah and Jeremiah, “when Jerusalem was dwelling abidingly,” at ease, as the whole world then was, except herself, “and the south and the low-country,” both belonging to Judah, were inhabited. The restoration then was still very incomplete, since he contrasts their then condition with the present, as inhabited or no. The mountain, the south, and the low country, known still by its name of Sephela to Greeks, made up the territory of Judah Joshua 10:40, Judges 1:9; Jeremiah 17:26; Jeremiah 32:44; Jeremiah 33:13.