Revelation 2:11

He who has an ear, let him hear what the Spirit says to the churches. He who overcomes will not be hurt 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 midst of the paradise of God.

Revelation 20:6

Blessed and holy is he who has part in the first resurrection. The second death has no authority over these, but they will be priests of God and of Christ, and will reign with Him a thousand years.

Revelation 20:14

And death and hell were cast into the Lake of Fire. This is the second death.

Revelation 21:8

But the fearful, and the unbelieving, and the abominable, and murderers, and whoremongers, and sorcerers, and idolaters, and all liars, will have their part in the Lake burning with fire and brimstone, 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 I will give to eat of the hidden manna, and will give to him a white stone, and in the stone a new name written, which no man knows except 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 midst of 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. The second death has no authority over these, but they will be priests of God and of Christ, and will reign with Him a thousand years.
Revelation 21:8
But the fearful, and the unbelieving, and the abominable, and murderers, and whoremongers, and sorcerers, and idolaters, and all liars, will have their part in the Lake burning with fire and brimstone, 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 to hear, let him hear.
Mark 4:23
If any man has ears to hear, let him hear.
Mark 7:16
If anyone has ears to hear, let him hear.
1 Corinthians 3:14
If anyone's work which he built remains, he shall receive a reward.
Hebrews 10:15
The Holy Spirit also is a witness to us; for after He had said before,
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.