So, remember how you have received and heard the message [i.e., they had eagerly accepted the Gospel]; [now] obey it and repent. For if you do not become [spiritually] alert, I will come as a thief [i.e. unexpectedly] and you will not know the [exact] time that I will come upon you [in judgment. See 2:16, 25].

"And write [this] to the angel of the church at Philadelphia: These are the words of Him who is holy and true, [and] who possesses the key [i.e., the power and authority] of King David, [and] who opens [a door] which no one will close, and who closes one that no one will open:

I know about your deeds. (See, I have placed before you an open door, which no one can close). [Note: This probably refers to their being assured of some unspecified opportunity]. [I know] that you have [only] a little bit of strength, but [in spite of that] you have obeyed my word and did not deny my name.

Because you have obeyed my command to remain steadfast [in the face of difficult times], I will also keep you from [giving up when] the time of trial comes, which is about to come upon the whole world, to test those living on the earth.

After [seeing all] these things, I looked, and there in heaven I saw [a vision of] an open door, and the voice I had first heard speaking to me like [the sound of] a trumpet [See 1:10], said, "Come up here [i.e., to heaven], and I will show you the things which must happen after these things [i.e., the things just revealed]."

And I saw a mighty angel proclaiming in a loud voice, "Who deserves to break the seals on it and open the book?" [Note: This "book" was probably a rolled up scroll written on both sides, with wax seals keeping it from unrolling and its contents from being exposed].

And no one in heaven, or on earth or under the earth was able to open the book or to look inside of it. [Note: "Under the earth" may refer to the spirit world].

And I cried bitterly because no one was found who deserved to open the book or to look inside of it.

Then one of the [twenty-four] elders said to me, "Do not cry; look, the Lion from the tribe of Judah, the Root of King David, has gained the victory, so He can break the seven seals on the book and open it."

And I watched while the Lamb broke open one of the seven seals. Then I heard one of the four living beings saying in a thunderous voice [to the one on the white horse ?], "Come [out]."

And when the Lamb broke open the second seal, I heard the second living being saying [to the one on the red horse ?], "Come [out]."

And when the Lamb broke open the third seal, I heard the third living being saying [to the one on the black horse ?], "Come [out]." So, I looked and before me [stood] a black horse, and the man riding on it had a pair of scales in his hand.

And when the Lamb broke open the fourth seal, I heard the fourth living being saying [to the one on the pale green horse ?], "Come [out]."

And when the Lamb broke open the fifth seal, I saw underneath the altar the souls of those who had been killed for [believing and preaching] God's message, and for the testimony [about Jesus] which they had maintained.

Then I looked as the Lamb broke open the sixth seal, and there [I saw] a great earthquake; the sun turned as black as sackcloth made out of [goat] hair, and the entire moon turned [as red] as blood.

Then when the Lamb broke open the seventh seal, there was silence in heaven for about half an hour.

And they had tails like scorpions with stingers, and in their tails they had the power to inflict harm upon people for five months.

He held in his hand a little book [i.e., scroll] which was open. And he placed his right foot on the ocean and his left foot on the land,

Then the voice which I had heard from heaven spoke to me again, saying, "Go [and] take the open book [being held] in the hand of the angel [See verse 2], who is standing on the ocean and on the land."

Then I heard a loud voice from the Temple saying to the seven angels, "You [angels], go and pour out the seven bowls of God's wrath upon the earth."

So, all at once her plagues [i.e., judgments] will fall upon her. [They will be] death and grief and famine. And she will be burned up with fire, for the Lord God who judges her, is mighty.

Then I saw heaven open, and there before me was a white horse whose rider was called "Faithful and True." And He [i.e., Christ] judges and wages war in a just way.