Zechariah 13:8

“And it shall come to pass, [that] in all the land, saith the Lord, etc.] Either in all the land of Israel, as Kimchi interprets it; or rather in all the world, as Aben Ezra and others; for this prophecy seems to have respect, not to the calamities of the Jews at the destruction of Jerusalem, after the death of Christ, when a few were saved, a remnant according to the election of grace, yet so as by fire, for whose sake the days of tribulation were shortened; but to the external state of the church, and the trouble of it throughout Christendom, about the time of the destruction of antichrist: two parts therein shall be cut off [and] die; all hypocrites, formalists, and outward court…”

“Two-thirds of the Jewish nation were to perish in the Roman wars, and a third to survive. Probably from the context (Zac 14:2-9), which has never yet been fulfilled, the destruction of the two-thirds (literally, "the proportion of two," or "portion of two") and the saving of the remnant, the one-third, are still future, and to be fulfilled under Antichrist.”

“In all the land, two parts therein shall be cut off and die - “In all the land of Israel,” says a Jewish interpreter; (Kimchi); “ - the land, in which the Good Shepherd had been slain and the sheep scattered, “that upon you.” our Lord had said, “may come all the righteous blood.” As David punished Moab, “with two lines measured he to put to death, and with one full line to keep alive” 2 Samuel 8:2; and Ezekiel prophesied, “A third part of thee shall die with the pestilence, and with famine shall they be consumed in the midst of thee: and a third part shall fall by the sword round about thee” Ezekiel 5:12; so now, the greater part should be destroyed, but a remnant should be saved. “But the…”

“Two parts - Not precisely two, but the greater part shall die a temporal death, by the sword of Titus, or in eternal death under unbelief. The third - A remnant, the lesser part, shall escape or be preserved. Next: Zechariah Chapter 14”

“13:8 Two-thirds . . . one-third: The divine judgment would be catastrophic, but God would preserve a remnant and forgive their sin (see Isa 65:9; Jer 50:20; Ezek 5:2-12; Rev 9:15-18).”

“two: Zac 11:6-9; Deut. 28:49-68; Isa 65:12-15, Isa 66:4-6, Isa 66:24; Eze 5:2-4, Eze 5:12; Dan 9:27; Mal 3:1, Mal 3:2, Mal 3:5, Mal 4:1-3; Mat 3:10-12, Mat 21:43, Mat 21:44, Mat 22:7, Mat 23:35-37, Mat 24:21; Luk 19:41-44, Luk 20:16-18, Luk 21:20-24, Luk 23:28-30; Th1 2:15, Th1 2:16; Rev 8:7-12; Rev 16:19 but: Zac 14:1, Zac 14:2; Isa 6:13; Jer 30:11; Joe 2:31, Joe 2:32; Amo 9:8, Amo 9:9; Mat 24:22; Mar 13:20; Rom 9:27-29, Rom 11:1-5 Zechariah 13:9”