Briefly:
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- First Seal (white horse): From Death and Resurrection (Blood shed) of
Christ to 95AD, Growth of pure Christianity through 12 apostles and
others.

- Second Seal (red horse): 95-313AD, Persecution of Believers by "Pagan
Roman Empire" till Constantine

- Third Seal (black horse): 313-538AD, Growing Pagan Christianity -full
of false doctrines by "Roman Empire" and the remained ten kingdoms
after its division.

- Fourth Seal (pale horse): 538-1798AD (1260 Days/Years)
Weak-changed and persecuting Christianity through "Papal Rome" ("Little
Horn" which "waxed great" in Daniel 8:9-12, "little horn" Daniel 7:8,
seventh head of "Beast" in Revelation 13 which received deadly wound
but healed!)
[Revelation 13:4-10; Daniel 7:20, 12:7; II Thessalonians 2:3-11]

- Fifth Seal: 1798-2009AD
Enough freedom for Christians to spread the Gospel around the world to
be witness against all nations. [Matthew 24:14; Mark 13:10]

- Sixth Seal: 2009-2012AD
Start of God's Judgment
Destruction of "Scarlet Woman" (Rome-Vatican) [Revelation 18:8-20,
9:13-15, 16:12; Ezekiel 26-32]
"Angel ascending from the east" [Revelation 7:2-3]
Destruction of new "Roman Empire" ("Fourth Beast", through "Sword of
God") [Revelation 14:17-19, 11:15-17, 16:18-21, 18:21, 19:17-20; Daniel
2:34, 7:11; Ezekiel 29-34]

- Seventh Seal: 2012AD, Second coming of Christ, Destruction remnant of
wicked, [Revelation 14:14-16, 19:21, Daniel 7:12-14, Ezekiel 35]

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Can we understand when will the End come?
http://groups-beta.google.com/group/bibleprophecystudy

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Revelation - Chapter 5
1: And I saw in the right hand of him that sat on the throne a book
written within and on the backside, sealed with seven seals.

Revelation - Chapter 6
2: And I saw, and behold a white horse: and he that sat on him had a
bow; and a crown was given unto him: and he went forth conquering, and
to conquer.
3: And when he had opened the second seal, I heard the second beast
say, Come and see. 4: And there went out another horse that was red:
and power was given to him that sat thereon to take peace from the
earth, and that they should kill one another: and there was given unto
him a great sword.
5: And when he had opened the third seal, I heard the third beast say,
Come and see. And I beheld, and lo a black horse; and he that sat on
him had a pair of balances in his hand. 6: And I heard a voice in the
midst of the four beasts say, A measure of wheat for a penny, and three
measures of barley for a penny; and see thou hurt not the oil and the
wine.
7: And when he had opened the fourth seal, I heard the voice of the
fourth beast say, Come and see. 8: And I looked, and behold a pale
horse: and his name that sat on him was Death, and Hell followed with
him. And power was given unto them over the fourth part of the earth,
to kill with sword, and with hunger, and with death, and with the
beasts of the earth.
9: And when he had opened the fifth seal, I saw under the altar the
souls of them that were slain for the word of God, and for the
testimony which they held: 10: And they cried with a loud voice,
saying, How long, O Lord, holy and true, dost thou not judge and avenge
our blood on them that dwell on the earth? 11: And white robes were
given unto every one of them; and it was said unto them, that they
should rest yet for a little season, until their fellowservants also
and their brethren, that should be killed as they were, should be
fulfilled.
12: And I beheld when he had opened the sixth seal, and, lo, there was
a great earthquake; and the sun became black as sackcloth of hair, and
the moon became as blood; 13: And the stars of heaven fell unto the
earth, even as a fig tree casteth her untimely figs, when she is shaken
of a mighty wind. 14: And the heaven departed as a scroll when it is
rolled together; and every mountain and island were moved out of their
places.
15: And the kings of the earth, and the great men, and the rich men,
and the chief captains, and the mighty men, and every bondman, and
every free man, hid themselves in the dens and in the rocks of the
mountains; 16: And said to the mountains and rocks, Fall on us, and
hide us from the face of him that sitteth on the throne, and from the
wrath of the Lamb: 17: For the great day of his wrath is come; and who
shall be able to stand?

Revelation - Chapter 8
1: And when he had opened the seventh seal, there was silence in heaven
about the space of half an hour.

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