Revelation 2:11

He who has an ear, let him hear what the Spirit says to the churches. He who overcomes won't be harmed by the second death.

Revelation 2:7

He who has an ear, let him hear what the Spirit says to the churches. To him who overcomes I will give to eat of the tree of life, which is in the Paradise of God.

Revelation 20:6

Blessed and holy is he who has part in the first resurrection. Over these, the second death has no power, but they will be priests of God and of Christ, and will reign with him one thousand years.

Revelation 20:14

Death and hell were thrown into the lake of fire. This is the second death, the lake of fire.

Revelation 21:8

But for the cowardly, unbelieving, abominable, murderers, sexually immoral, sorcerers, idolaters, and all liars, their part is in the lake that burns with fire and sulfur, which is the second death."

Revelation 2:17

He who has an ear, let him hear what the Spirit says to the churches. To him who overcomes, to him I will give of the hidden manna, and I will give him a white stone, and on the stone a new name written, which no one knows but he 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
He who has an ear, let him hear what the Spirit says to the churches. To him who overcomes I will give to eat of 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 he who has part in the first resurrection. Over these, the second death has no power, but they will be priests of God and of Christ, and will reign with him one thousand years.
Revelation 21:8
But for the cowardly, unbelieving, abominable, murderers, sexually immoral, sorcerers, idolaters, and all liars, their part is in the lake that burns with fire and sulfur, which is the second death."

General references

Isaiah 28:23
Give ear, and hear my voice. Listen, and hear my speech.
Matthew 11:15
He who has ears to hear, let him hear.
Matthew 13:9
He who has ears, let him hear."
Mark 4:23
If any man has ears to hear, let him hear."
Mark 7:16
17 When he had entered into a house away from the crowd, his disciples asked him about the parable.
1 Corinthians 3:14
If any man's work remains which he built on it, he will receive a reward.
Hebrews 10:15
The Holy Spirit also testifies to us, for after saying,
Revelation 3:22
He 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.