Revelation 1:18

I was dead and here I am alive for evermore, holding the keys that unlock death and Hades.

Romans 6:9

for we know that Christ never dies after his resurrection from the dead ??death has no more hold over him;

Hebrews 7:25

Hence for all time he is able to save those who approach God through him, as he is always living to intercede on their behalf.

Revelation 4:9

And whenever the living Creatures render glory and honour and thanksgiving to him who is seated on the throne, who lives for ever and ever,

Revelation 9:1

The fifth angel blew, and I saw a Star which had dropped from heaven to earth; he was given the key of the pit of the abyss,

Matthew 16:19

I will give you the keys of the Realm of heaven; whatever you prohibit on earth will be prohibited in heaven, and whatever you permit on earth will be permitted in heaven."

Hebrews 1:3

He, reflecting God's bright glory and stamped with God's own character, sustains the universe with his word of power; when he had secured our purification from sins, he sat down at the right hand of the Majesty on high;

Hebrews 12:2

our eyes fixed upon Jesus as the pioneer and the perfection of faith ??upon Jesus who, in order to reach his own appointed joy, steadily endured the cross, thinking nothing of its shame, and is now seated at the right hand of the throne of God.

Revelation 3:7

Then to the angel of the church at Philadelphia write thus: ??These are the words of the true Holy One, who holds the key of David, who opens and none shall shut, who shuts and none shall open.

Revelation 20:14

Then Death and Hades were flung into the lake of fire,

John 14:19

A little while longer and the world will see me no more; but you will see me, because I am living and you will be living too.

Romans 14:8-9

if we live, we live to the Lord, and if we die, we die to the Lord. Thus we are the Lord's whether we live or die;

2 Corinthians 5:14-15

for I am controlled by the love of Christ, convinced that as One has died for all, then all have died,

2 Corinthians 13:4

For though he was crucified in his weakness, he lives by the power of God; and though I am weak as he was weak, you will find I am alive as he is alive by the power of God.

Galatians 2:20

I have been crucified with Christ, and it is no longer I who live, Christ lives in me; the life I now live in the flesh I live by faith in the Son of God who loved me and gave himself up for me.

Colossians 3:3

for you died and your life is hidden with Christ in God.

Hebrews 7:16

one who has become a priest by the power of an indissoluble Life and not by the law of an external command;

Revelation 5:14

"Amen," said the four living Creatures, and the Presbyters fell down and worshipped.

Revelation 20:1-2

Then I saw an angel descend from heaven with the key of the abyss and a huge chain in his hand;

Treasury of Scripture Knowledge

Summary

I am he that liveth, and was dead; and, behold, I am alive for evermore, Amen; and have the keys of hell and of death.

General references

Bible References

That liveth

John 14:19
A little while longer and the world will see me no more; but you will see me, because I am living and you will be living too.
Romans 6:9
for we know that Christ never dies after his resurrection from the dead ??death has no more hold over him;
2 Corinthians 13:4
For though he was crucified in his weakness, he lives by the power of God; and though I am weak as he was weak, you will find I am alive as he is alive by the power of God.
Galatians 2:20
I have been crucified with Christ, and it is no longer I who live, Christ lives in me; the life I now live in the flesh I live by faith in the Son of God who loved me and gave himself up for me.
Colossians 3:3
for you died and your life is hidden with Christ in God.
Hebrews 7:25
Hence for all time he is able to save those who approach God through him, as he is always living to intercede on their behalf.

Was

Romans 14:8
if we live, we live to the Lord, and if we die, we die to the Lord. Thus we are the Lord's whether we live or die;
2 Corinthians 5:14
for I am controlled by the love of Christ, convinced that as One has died for all, then all have died,
Hebrews 1:3
He, reflecting God's bright glory and stamped with God's own character, sustains the universe with his word of power; when he had secured our purification from sins, he sat down at the right hand of the Majesty on high;
Hebrews 12:2
our eyes fixed upon Jesus as the pioneer and the perfection of faith ??upon Jesus who, in order to reach his own appointed joy, steadily endured the cross, thinking nothing of its shame, and is now seated at the right hand of the throne of God.

I am alive

Revelation 4:9
And whenever the living Creatures render glory and honour and thanksgiving to him who is seated on the throne, who lives for ever and ever,
Revelation 5:14
"Amen," said the four living Creatures, and the Presbyters fell down and worshipped.
Hebrews 7:16
one who has become a priest by the power of an indissoluble Life and not by the law of an external command;

The keys

Revelation 3:7
Then to the angel of the church at Philadelphia write thus: ??These are the words of the true Holy One, who holds the key of David, who opens and none shall shut, who shuts and none shall open.
Revelation 9:1
The fifth angel blew, and I saw a Star which had dropped from heaven to earth; he was given the key of the pit of the abyss,
Revelation 20:1
Then I saw an angel descend from heaven with the key of the abyss and a huge chain in his hand;
Matthew 16:19
I will give you the keys of the Realm of heaven; whatever you prohibit on earth will be prohibited in heaven, and whatever you permit on earth will be permitted in heaven."

General references

1 Corinthians 15:13
If 'there is no such thing as a resurrection from the dead,' then even Christ did not rise;
Hebrews 13:8
Jesus Christ is always the same, yesterday, to-day, and for ever.