Hebrews 10:39

But we do not belong to those who draw back, to their Ruin, but to those who have faith, to the saving of their souls.

Mark 16:16

He who believes and is baptized shall be saved; but he who refuses to believe will be condemned.

Luke 11:26

Then it goes and brings with it seven other spirits more wicked than itself, and they go in, and make their home there; and the last state of that man proves to be worse than the first."

John 3:15-16

That every one who believes in him may have Immortal Life."

John 5:24

In truth I tell you that he who listens to my Message and believes him who sent me, has Immortal Life, and does not come under condemnation, but has already passed out of Death into Life.

John 6:40

For it is the will of my Father that every one who sees the Son, and believes in him, should have Immortal Life; and I myself will raise him up at the Last Day."

John 17:12

Whilst I was with them, I kept them by that revelation, and I have guarded them; and not one of them has been lost, except that lost soul--in fulfillment of Scripture.

John 20:31

But these have been recorded that you may believe that Jesus is the Christ, the Son of God--and that, through your belief in his Name, you may have Life.

Acts 16:30-31

Then he led them out, and said: "What must I do to be saved?"

Romans 10:9-10

For, if with your lips you acknowledge the truth of the Message that JESUS IS LORD, and believe in your heart that God raised him from the dead, you shall be saved.

1 Thessalonians 5:9

For God destined us, not for Wrath, but to win Salvation through our Lord Jesus Christ, who died for us,

2 Thessalonians 2:3

Do not let any one deceive you, whatever he may do. For it will not come until after the Great Apostasy, and the appearing of that Incarnation of Wickedness, that the Lost soul,

2 Thessalonians 2:12-14

So that sentence may be passed on all those who refuse to believe the Truth, but delight in wickedness.

1 Timothy 6:9

Those who want to be rich fall into the snares of temptation, and become the prey of many foolish and harmful ambitions, which plunge people into Destruction and Ruin.

Hebrews 6:6-9

if those, I say, fell away, it would be impossible to bring them again to repentance; they would be crucifying the Son of God over again for themselves, and exposing him to open contempt.

Hebrews 10:26

Remember, if we sin willfully after we have gained a full knowledge of the Truth, there can be no further sacrifice for sin;

Hebrews 11:1

Faith is the realization of things hoped for--the proof of things not seen.

1 Peter 1:5

for you who, through faith, are being guarded by the power of God, awaiting a Salvation that is ready to be revealed in the last days.

2 Peter 3:7

But the present heavens and earth, by the same fiat, have been reserved for fire, and are being kept for the day of the judgment and destruction of the godless.

1 John 5:5

Who is he that conquers the world but the man who believes that Jesus is the Son of God?

1 John 5:16

If any one sees his Brother committing some sin that is not a deadly sin, he will ask, and so be the means of giving Life to him--to any whose sin is not deadly. There is such a thing as deadly sin; about that I do not say that a man should pray.

Jude 1:12-13

These are the men who are blots upon your 'Love-feasts,' when they feast together and provide without scruple for themselves alone. They are clouds without rain, driven before the winds; they are leafless trees without a vestige of fruit, dead through and through, torn up by the roots;

Revelation 17:8

The Beast that you saw was, but is not, and is about to rise out of the bottomless pit, and is on its way to destruction. Those who are living on earth will be amazed--those whose names have not been written in the Book of Life from the foundation of the world--when they see that the Beast was, but is not, and yet will come.'

Revelation 17:11

So must the Beast that was, but is not. He counts as an eighth king, although he is one of the seven, and is on his way to destruction.

Treasury of Scripture Knowledge

Summary

But we are not of them who draw back unto perdition; but of them that believe to the saving of the soul.

General references

Bible References

We are

Hebrews 6:6
if those, I say, fell away, it would be impossible to bring them again to repentance; they would be crucifying the Son of God over again for themselves, and exposing him to open contempt.
Luke 11:26
Then it goes and brings with it seven other spirits more wicked than itself, and they go in, and make their home there; and the last state of that man proves to be worse than the first."
1 John 5:16
If any one sees his Brother committing some sin that is not a deadly sin, he will ask, and so be the means of giving Life to him--to any whose sin is not deadly. There is such a thing as deadly sin; about that I do not say that a man should pray.
Jude 1:12
These are the men who are blots upon your 'Love-feasts,' when they feast together and provide without scruple for themselves alone. They are clouds without rain, driven before the winds; they are leafless trees without a vestige of fruit, dead through and through, torn up by the roots;

Unto

Hebrews 10:26
Remember, if we sin willfully after we have gained a full knowledge of the Truth, there can be no further sacrifice for sin;
John 17:12
Whilst I was with them, I kept them by that revelation, and I have guarded them; and not one of them has been lost, except that lost soul--in fulfillment of Scripture.
2 Thessalonians 2:3
Do not let any one deceive you, whatever he may do. For it will not come until after the Great Apostasy, and the appearing of that Incarnation of Wickedness, that the Lost soul,
1 Timothy 6:9
Those who want to be rich fall into the snares of temptation, and become the prey of many foolish and harmful ambitions, which plunge people into Destruction and Ruin.
2 Peter 3:7
But the present heavens and earth, by the same fiat, have been reserved for fire, and are being kept for the day of the judgment and destruction of the godless.
Revelation 17:8
The Beast that you saw was, but is not, and is about to rise out of the bottomless pit, and is on its way to destruction. Those who are living on earth will be amazed--those whose names have not been written in the Book of Life from the foundation of the world--when they see that the Beast was, but is not, and yet will come.'

General references

Matthew 24:13
Yet the man that endures to the end shall be saved.
Luke 17:32
Remember Lot's wife.