Here are a couple of Miller's proofs:
Proof 1:
I. I prove it by the time given by Moses, in the 26th chapter of Leviticus, being seven times that the people of God are to be in bondage to the kingdoms of this world; or in Babylon, literal and mystical; which seven times cannot be understood less than seven times 360 revolutions of earth in its orbit, making 2520 years. I believe this began according to Jeremiah xv. 4, "And I will cause them to be removed into all kingdoms of the earth, because of Manasseh, the son of Hezekiah, king of Judah, for that which he did in Jerusalem," and Isa. vii. 8, "For the head of Syria is Damascus, and the head of Damascus is Resin: and within threescore and five years shall Ephraim be broken, that it be not a people,"when Manasseh was carried captive to Babylon, and Israel was no more a nation,see chronology, 2 Chron. xxxiii. 9, "So Manasseh made Judah and the inhabitants of Jerusalem to err, and to do worse than the heathen, whom the Lord had destroyed before the children of Israel,"the 677th year B. C. Then take 677 out of 2520, leaves A. D. 1843, when the punishment of the people of God will end. (See Miller's Lectures, p. 251.)
Proof 6:
VI. I prove it by Hosea vi. 1‑3: "Come, and let us return unto the Lord; for he hath torn, and he will heal us; he hath smitten, and he will bind us up. After two days will he revive us: in the third day he will raise us up, and we shall live in his sight. Then shall we know, if we follow on to know the Lord; his going forth is prepared as the morning; and he shall come unto us as the rain, as the latter and former rain unto the earth." This prophecy is the two days of the Roman kingdom, in its Imperial, Kingly, and Papal form, with its great iron teeth, tearing and persecuting the people of God; the third day is the same as Rev. xx. 6: "Blessed and holy is he that hath part in the first resurrection: on such the second death has no power, but they shall be priests of God and of Christ, and shall reign with him a thousand years;" when the people of God will live in his sight, "live and reign with him a thousand years." If, then, the third day is a thousand years, then the two days are of equal length. When did the two days begin? Ans. When the Jews made a league with the Romans, See Hosea v. 13: "When Ephraim saw his sickness, and Judah saw his wound, then went Ephraim to the Assyrian, and sent king Jareb: yet could he not heal you, nor cure you your wound." Dan. xi. 23: "And after the league made with him, he shall work deceitfully; for he shall come up, and shall become strong with a small people." I Macabees, 8th and 9th chapters. This league was confirmed and ratified, and the Grecian kingdom to rule over god's people B. C. 158 years. Then add 158 to 1842, and we have 2000 years, or two days; as Peter says, 2 Pet iii. 8; "But beloved, be not ignorant of this one thing, that one day is with the Lord as a thousand years, and a thousand years as one day." And 1843 is the first year in the third thousand years, or third day of the Lord. The world has stood still since the fall of man 2000 years under the Patriarchs; 2000 years under the Assyrian. Baby-
lonian, Medo-Persian, and Grecian; and 2000 years under Rome Pagan, Papal and Kingly. (See Sec. Adv. Lib. No. 3, p. 45.)