Hebrews 6:8

whereas, if it produces thorns and thistles, it is reprobate and on the verge of being cursed ??its fate is to be burned.

Luke 13:7-9

So he said to the vinedresser, 'Here have I come for three years in search of fruit on this fig tree without finding any; cut it down, why should it take up space?'

John 15:6

If anyone does not remain in me he is thrown aside like a branch and he withers up; then the branches are gathered and thrown into the fire to be burned.

Matthew 3:10

The axe is lying all ready at the root of the trees; any tree that is not producing good fruit will be cut down and thrown into the fire.

Matthew 7:19

[Relocated to follow vs 20] Any tree that does not produce sound fruit will be cut down and thrown into the fire.

Matthew 25:41

Then he will say to those on the left, 'Begone from me, you accursed ones, to the eternal fire which has been prepared for the devil and his angels!

Mark 11:14

Then he said to it, "May no one ever eat fruit from you after this!" The disciples heard him say it.

Mark 11:21

Then Peter remembered. "Rabbi," he said, "there is the fig tree you cursed, all withered!"

Hebrews 10:27

nothing but an awful outlook of doom, of that burning Wrath which will consume the foes of God.

Hebrews 12:17

You know how later on, when he wanted to obtain his inheritance of blessing, he was set aside; he got no chance to repent, though he tried for it with tears.

Revelation 20:15

and whoever was not found enrolled in the book of Life was flung into the lake of fire ??which is the second death, the lake of fire.

Treasury of Scripture Knowledge

Summary

But that which beareth thorns and briers is rejected, and is nigh unto cursing; whose end is to be burned.

Bible References

Beareth

Hebrews 12:17
You know how later on, when he wanted to obtain his inheritance of blessing, he was set aside; he got no chance to repent, though he tried for it with tears.
Mark 11:14
Then he said to it, "May no one ever eat fruit from you after this!" The disciples heard him say it.
Luke 13:7
So he said to the vinedresser, 'Here have I come for three years in search of fruit on this fig tree without finding any; cut it down, why should it take up space?'

Whose

Hebrews 10:27
nothing but an awful outlook of doom, of that burning Wrath which will consume the foes of God.
Matthew 3:10
The axe is lying all ready at the root of the trees; any tree that is not producing good fruit will be cut down and thrown into the fire.
Matthew 7:19
[Relocated to follow vs 20] Any tree that does not produce sound fruit will be cut down and thrown into the fire.
Matthew 25:41
Then he will say to those on the left, 'Begone from me, you accursed ones, to the eternal fire which has been prepared for the devil and his angels!
John 15:6
If anyone does not remain in me he is thrown aside like a branch and he withers up; then the branches are gathered and thrown into the fire to be burned.
Revelation 20:15
and whoever was not found enrolled in the book of Life was flung into the lake of fire ??which is the second death, the lake of fire.

General references

Mark 3:28
I tell you truly, the sons of men shall be forgiven all their sins, and all the blasphemies they may utter,
Luke 12:10
Everyone also who says a word against the Son of man will be forgiven for it, but he who blasphemes against the holy Spirit will never be forgiven.
Luke 14:30
saying, 'This fellow started to build but he could not finish it.'
Luke 23:31
For if this is what they do when the wood is green, what will they do when the wood is dry?"
Jude 1:22
Snatch some from the fire, and have mercy on the waverers,