Revelation 3:7

"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:

Matthew 16:19

[And] I will give you the keys of the kingdom of heaven [i.e., for opening up the way into it]. And whatever [truth] you [and the other apostles. See 18:18] require [people to believe and practice] here on earth will have already been required of them [by God] in heaven. And whatever [truth] you do not require [of people] on earth, will not be required [by God] in heaven."

Revelation 6:10

And they called out with a loud voice, "How long, holy and true Master, [will it be] before you judge the people living on earth and take revenge on them for [shedding] our blood?"

Luke 1:32

He will be great and will be called the Son of the Highest [i.e., God], and the Lord will give Him the throne of His forefather King David.

1 John 5:20

And [in addition], we know that the Son of God has come [in a physical body, See 4:2] and has given us understanding, so that we can know the True One [i.e., God], and that we are in [fellowship with] the True One, even His Son Jesus Christ. This Son is the true God and eternal life.

Revelation 3:14

"Write [this] to the angel of the church at Laodicia: These are the words of the Amen, the faithful and true Witness, the source [or, ruler] of God's creation [See John 1:3; Heb. 1:1-2]:

Acts 3:14

But you denied the Holy and Righteous One [His rightful freedom] and asked for a murderer to be released to you [instead].

Revelation 1:11

saying, "Write down in a book what you see and send it to the seven churches: Ephesus, Smyrna, Pergamum, Thyatira, Sardis, Philadelphia and Laodicia" [Note: These seven congregations were all located in western Asia Minor].

Revelation 1:18

and the Living One. I was dead, and see, I am [now] alive forever and ever! And I possess the keys of death and of the unseen place of departed spirits.

Revelation 19:11

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.

Mark 1:24

"What business do we have with you, Jesus from Nazareth? Have you come to destroy us? I know who you are; [you are] God's Holy One."

Revelation 1:5

[It is also] from Jesus Christ, who is the Faithful Witness [to the truth], the Firstborn from the dead [i.e., the first One raised never to die again], the Ruler of the kings of the world. May there be honor and power forever and ever to Christ, who loved us and released us from our sins by His blood [Note: Some manuscripts say "washed us" since the two words are spelled almost alike].

Matthew 24:35

[Although] the sky and the earth will pass away [See II Pet. 3:10], my words will not pass away [i.e., they will certainly come true].

Luke 4:34

"Ha! What business do we have with you, Jesus from Nazareth? Have you come to destroy us? I know who you are; [you are] God's Holy One."

John 14:6

Jesus answered him, "I am the way [to God], and the truth [to believe], and the life [to live]. No one can go to the Father, except through [believing in] me.

Revelation 2:1

"Write [this] to the angel [i.e., the messenger] of the church at Ephesus [Note: These "messengers," (verses 8, 12, 18; 3:1, 7, 14) are thought by some to be evangelists]: These things are the words of the One who holds the seven stars in His right hand and walks among the seven golden lampstands:

Revelation 4:8

And each of the four living beings had six wings [and] were covered with eyes all around them and [even] within them. And day and night they never stop saying, [Note: Some translations have "singing" here and at other places below], "Holy, holy, holy [is] the Lord God Almighty, who was [in the past] and who is [in the present] and who will come [in the future]."

Revelation 5:3-5

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].

Revelation 5:9

And they sang a new song [which went like this]: "You deserve to take the book and break the seals on it, for you were killed and, with your blood, you purchased people for God from every tribe and language and race and nation,

Revelation 15:3

And they were singing the song of Moses, the servant of God, and the song of the Lamb. [The words were], "Your deeds are great and marvelous, O Lord, God Almighty; your ways are just and true, O King of the nations [or, "ages"].

Revelation 16:7

And I heard [a voice from] the Altar saying, "Yes, O Lord, God Almighty, your judgments are true and just."

Revelation 19:2

For His judgments are true and just; He has judged [i.e., condemned] the great prostitute who corrupted the earth with her sexual immorality, and He has punished her for [shedding] the blood of His servants."

Revelation 21:5

Then the One who is seated on the throne [i.e., Christ, or God] said, "Listen, I am making everything new!" Then He said, "Write [this], because these words are trustworthy and true."

Treasury of Scripture Knowledge

Summary

And to the angel of the church in Philadelphia write; These things saith he that is holy, he that is true, he that hath the key of David, he that openeth, and no man shutteth; and shutteth, and no man openeth;

He that openeth

General references

Bible References

He that is holy

Revelation 4:8
And each of the four living beings had six wings [and] were covered with eyes all around them and [even] within them. And day and night they never stop saying, [Note: Some translations have "singing" here and at other places below], "Holy, holy, holy [is] the Lord God Almighty, who was [in the past] and who is [in the present] and who will come [in the future]."
Revelation 6:10
And they called out with a loud voice, "How long, holy and true Master, [will it be] before you judge the people living on earth and take revenge on them for [shedding] our blood?"
Mark 1:24
"What business do we have with you, Jesus from Nazareth? Have you come to destroy us? I know who you are; [you are] God's Holy One."
Luke 4:34
"Ha! What business do we have with you, Jesus from Nazareth? Have you come to destroy us? I know who you are; [you are] God's Holy One."
Acts 3:14
But you denied the Holy and Righteous One [His rightful freedom] and asked for a murderer to be released to you [instead].

He that is true

Revelation 3:14
"Write [this] to the angel of the church at Laodicia: These are the words of the Amen, the faithful and true Witness, the source [or, ruler] of God's creation [See John 1:3; Heb. 1:1-2]:
Revelation 1:5
[It is also] from Jesus Christ, who is the Faithful Witness [to the truth], the Firstborn from the dead [i.e., the first One raised never to die again], the Ruler of the kings of the world. May there be honor and power forever and ever to Christ, who loved us and released us from our sins by His blood [Note: Some manuscripts say "washed us" since the two words are spelled almost alike].
Revelation 6:10
And they called out with a loud voice, "How long, holy and true Master, [will it be] before you judge the people living on earth and take revenge on them for [shedding] our blood?"
Revelation 15:3
And they were singing the song of Moses, the servant of God, and the song of the Lamb. [The words were], "Your deeds are great and marvelous, O Lord, God Almighty; your ways are just and true, O King of the nations [or, "ages"].
Revelation 16:7
And I heard [a voice from] the Altar saying, "Yes, O Lord, God Almighty, your judgments are true and just."
Revelation 19:2
For His judgments are true and just; He has judged [i.e., condemned] the great prostitute who corrupted the earth with her sexual immorality, and He has punished her for [shedding] the blood of His servants."
Revelation 21:5
Then the One who is seated on the throne [i.e., Christ, or God] said, "Listen, I am making everything new!" Then He said, "Write [this], because these words are trustworthy and true."
Matthew 24:35
[Although] the sky and the earth will pass away [See II Pet. 3:10], my words will not pass away [i.e., they will certainly come true].
John 14:6
Jesus answered him, "I am the way [to God], and the truth [to believe], and the life [to live]. No one can go to the Father, except through [believing in] me.
1 John 5:20
And [in addition], we know that the Son of God has come [in a physical body, See 4:2] and has given us understanding, so that we can know the True One [i.e., God], and that we are in [fellowship with] the True One, even His Son Jesus Christ. This Son is the true God and eternal life.

The key

Revelation 1:18
and the Living One. I was dead, and see, I am [now] alive forever and ever! And I possess the keys of death and of the unseen place of departed spirits.
Luke 1:32
He will be great and will be called the Son of the Highest [i.e., God], and the Lord will give Him the throne of His forefather King David.

He that openeth

Revelation 5:3
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].
Matthew 16:19
[And] I will give you the keys of the kingdom of heaven [i.e., for opening up the way into it]. And whatever [truth] you [and the other apostles. See 18:18] require [people to believe and practice] here on earth will have already been required of them [by God] in heaven. And whatever [truth] you do not require [of people] on earth, will not be required [by God] in heaven."

General references

Matthew 18:18
Truly I tell you, whatever [truth] you disciples require [of people to believe and obey] on earth will have [already] been required [by God] in heaven. And whatever [truth] you do not require [of people to believe and obey] on earth, will not have [already] been required [by God] in heaven.
Luke 24:45
Then He opened their minds [miraculously ?] so they would understand the Scriptures.