Revelation 2:11

The one who has an ear, let him hear what the Spirit says to the churches. The one who conquers will never be harmed by the second death.'

Revelation 2:7

The one who has an ear, let him hear what the Spirit says to the churches. To the one who conquers, I will grant to him to eat from the tree of life which is in the paradise of God.'

Revelation 20:6

Blessed and holy [is] the one who has a part in the first resurrection. Over this person the second death has no authority, but they will be priests of God and of Christ, and they will reign with him a thousand years.

Revelation 20:14

And Death and Hades were thrown into the lake of fire. This is the second death--the lake of fire.

Revelation 21:8

But [as] for the cowards and unbelievers and detestable persons and murderers and sexually immoral people and sorcerers and idolaters and all liars, their share [is] in the lake that burns with fire and sulphur, which is the second death.

Revelation 2:17

The one who has an ear, let him hear what the Spirit says to the churches. To the one who conquers, I will give to him [some] of the hidden manna, and I will give to him a white stone, and on the stone a new name written, that no one knows except the one who receives [it].'

Revelation 13:9

If anyone has an ear, let him hear!

Treasury of Scripture Knowledge

Summary

He that hath an ear, let him hear what the Spirit saith unto the churches; He that overcometh shall not be hurt of the second death.

Bible References

That hath

Revelation 2:7
The one who has an ear, let him hear what the Spirit says to the churches. To the one who conquers, I will grant to him to eat from the tree of life which is in the paradise of God.'
Revelation 13:9
If anyone has an ear, let him hear!

The second

Revelation 20:6
Blessed and holy [is] the one who has a part in the first resurrection. Over this person the second death has no authority, but they will be priests of God and of Christ, and they will reign with him a thousand years.
Revelation 21:8
But [as] for the cowards and unbelievers and detestable persons and murderers and sexually immoral people and sorcerers and idolaters and all liars, their share [is] in the lake that burns with fire and sulphur, which is the second death.

General references

Isaiah 28:23
Listen, and hear my voice! Listen attentively, and hear my word!
Matthew 11:15
The one who has ears, let him hear!
Matthew 13:9
The one who has ears, let him hear!"
Mark 4:23
If anyone has ears to hear, let him hear!"
1 Corinthians 3:14
If anyone's work that he has built upon [it] remains, he will receive a reward.
Hebrews 10:15
And the Holy Spirit also testifies to us, for after saying,
Revelation 3:22
The one who has an ear, let him hear what the Spirit says to the churches.'"
Revelation 13:9
If anyone has an ear, let him hear!