Revelation 2:11

He who has an ear, let him hear and heed what the Spirit says to the churches. He who overcomes [the world through believing that Jesus is the Son of God] will not be hurt by the second death (the lake of fire).’

Revelation 2:7

He who has an ear, let him hear and heed what the Spirit says to the churches. To him who overcomes [the world through believing that Jesus is the Son of God], I will grant [the privilege] to eat [the fruit] from the tree of life, which is in the Paradise of God.’

Revelation 20:6

Blessed (happy, prosperous, to be admired) and holy is the person who takes part in the first resurrection; over these the second death [which is eternal separation from God, the lake of fire] has no power or authority, but they will be priests of God and of Christ and they will reign with Him a thousand years.

Revelation 20:14

Then death and Hades [the realm of the dead] were thrown into the lake of fire. This is the second death, the lake of fire [the eternal separation from God].

Revelation 21:8

But as for the cowards and unbelieving and abominable [who are devoid of character and personal integrity and practice or tolerate immorality], and murderers, and sorcerers [with intoxicating drugs], and idolaters and occultists [who practice and teach false religions], and all the liars [who knowingly deceive and twist truth], their part will be in the lake that blazes with fire and brimstone, which is the second death.”

Revelation 2:17

He who has an ear, let him hear and heed what the Spirit says to the churches. To him who overcomes [the world through believing that Jesus is the Son of God], to him I will give [the privilege of eating] some of the hidden manna, and I will give him a white stone with a new name engraved on the stone which 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
He who has an ear, let him hear and heed what the Spirit says to the churches. To him who overcomes [the world through believing that Jesus is the Son of God], I will grant [the privilege] to eat [the fruit] 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 (happy, prosperous, to be admired) and holy is the person who takes part in the first resurrection; over these the second death [which is eternal separation from God, the lake of fire] has no power or 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 unbelieving and abominable [who are devoid of character and personal integrity and practice or tolerate immorality], and murderers, and sorcerers [with intoxicating drugs], and idolaters and occultists [who practice and teach false religions], and all the liars [who knowingly deceive and twist truth], their part will be in the lake that blazes with fire and brimstone, which is the second death.”

General references

Isaiah 28:23

Listen and hear my voice;
Listen carefully and hear my words.
Matthew 11:15
He who has ears to hear, let him hear and heed My words.
Matthew 13:9
He who has ears [to hear], let him hear and heed My words.”
Mark 4:23
If anyone has ears to hear, let him hear and heed My words.”
Mark 7:16
[If anyone has ears to hear, let him hear.”]
1 Corinthians 3:14
If any person’s work which he has built [on this foundation, that is, any outcome of his effort] remains [and survives this test], he will receive a reward.
Hebrews 10:15
And the Holy Spirit also adds His testimony to us [in confirmation of this]; for after having said,
Revelation 3:22
He who has an ear, let him hear and heed what the Spirit says to the churches.’”
Revelation 13:9
If anyone has an ear, let him hear.