1 John 2:19

They went out from us, but they were not really of us; for if they had been of us, they would have remained with us; but they went out, so that it would be shown that they all are not of us.

Acts 20:30

and from among your own selves men will arise, speaking perverse things, to draw away the disciples after them.

1 Corinthians 11:19

For there must also be factions among you, so that those who are approved may become evident among you.

Deuteronomy 13:13

some worthless men have gone out from among you and have seduced the inhabitants of their city, saying, ‘Let us go and serve other gods’ (whom you have not known),

Job 17:9

“Nevertheless the righteous will hold to his way,
And he who has clean hands will grow stronger and stronger.

Psalm 37:28

For the Lord loves justice
And does not forsake His godly ones;
They are preserved forever,
But the descendants of the wicked will be cut off.

Psalm 41:9

Even my close friend in whom I trusted,
Who ate my bread,
Has lifted up his heel against me.

Psalm 125:1-2

A Song of Ascents.
Those who trust in the Lord
Are as Mount Zion, which cannot be moved but abides forever.

Jeremiah 32:38-40

They shall be My people, and I will be their God;

Matthew 13:20-21

The one on whom seed was sown on the rocky places, this is the man who hears the word and immediately receives it with joy;

Matthew 24:24

For false Christs and false prophets will arise and will show great signs and wonders, so as to mislead, if possible, even the elect.

Mark 4:5-6

Other seed fell on the rocky ground where it did not have much soil; and immediately it sprang up because it had no depth of soil.

Mark 4:16-17

In a similar way these are the ones on whom seed was sown on the rocky places, who, when they hear the word, immediately receive it with joy;

Mark 13:22

for false Christs and false prophets will arise, and will show signs and wonders, in order to lead astray, if possible, the elect.

Luke 8:13

Those on the rocky soil are those who, when they hear, receive the word with joy; and these have no firm root; they believe for a while, and in time of temptation fall away.

John 4:14

but whoever drinks of the water that I will give him shall never thirst; but the water that I will give him will become in him a well of water springing up to eternal life.”

John 6:37-39

All that the Father gives Me will come to Me, and the one who comes to Me I will certainly not cast out.

John 10:28-30

and I give eternal life to them, and they will never perish; and no one will snatch them out of My hand.

John 15:2

Every branch in Me that does not bear fruit, He takes away; and every branch that bears fruit, He prunes it so that it may bear more fruit.

Acts 15:24

“Since we have heard that some of our number to whom we gave no instruction have disturbed you with their words, unsettling your souls,

Romans 9:6

But it is not as though the word of God has failed. For they are not all Israel who are descended from Israel;

Romans 11:5-6

In the same way then, there has also come to be at the present time a remnant according to God’s gracious choice.

2 Timothy 2:10

For this reason I endure all things for the sake of those who are chosen, so that they also may obtain the salvation which is in Christ Jesus and with it eternal glory.

2 Timothy 2:19

Nevertheless, the firm foundation of God stands, having this seal, “The Lord knows those who are His,” and, “Everyone who names the name of the Lord is to abstain from wickedness.”

2 Timothy 3:9

But they will not make further progress; for their folly will be obvious to all, just as Jannes’s and Jambres’s folly was also.

Hebrews 10:39

But we are not of those who shrink back to destruction, but of those who have faith to the preserving of the soul.

1 Peter 1:2-5

according to the foreknowledge of God the Father, by the sanctifying work of the Spirit, to obey Jesus Christ and be sprinkled with His blood: May grace and peace be yours in the fullest measure.

2 Peter 2:20-21

For if, after they have escaped the defilements of the world by the knowledge of the Lord and Savior Jesus Christ, they are again entangled in them and are overcome, the last state has become worse for them than the first.

Jude 1:1

Jude, a bond-servant of Jesus Christ, and brother of James,To those who are the called, beloved in God the Father, and kept for Jesus Christ:

Jude 1:19

These are the ones who cause divisions, worldly-minded, devoid of the Spirit.

Treasury of Scripture Knowledge

Summary

They went out from us, but they were not of us; for if they had been of us, they would no doubt have continued with us: but they went out, that they might be made manifest that they were not all of us.

Bible References

Went out

Deuteronomy 13:13
some worthless men have gone out from among you and have seduced the inhabitants of their city, saying, ‘Let us go and serve other gods’ (whom you have not known),
Psalm 41:9
Even my close friend in whom I trusted,
Who ate my bread,
Has lifted up his heel against me.
Matthew 13:20
The one on whom seed was sown on the rocky places, this is the man who hears the word and immediately receives it with joy;
Mark 4:5
Other seed fell on the rocky ground where it did not have much soil; and immediately it sprang up because it had no depth of soil.
Luke 8:13
Those on the rocky soil are those who, when they hear, receive the word with joy; and these have no firm root; they believe for a while, and in time of temptation fall away.
John 15:2
Every branch in Me that does not bear fruit, He takes away; and every branch that bears fruit, He prunes it so that it may bear more fruit.
Acts 15:24
“Since we have heard that some of our number to whom we gave no instruction have disturbed you with their words, unsettling your souls,
Acts 20:30
and from among your own selves men will arise, speaking perverse things, to draw away the disciples after them.
2 Peter 2:20
For if, after they have escaped the defilements of the world by the knowledge of the Lord and Savior Jesus Christ, they are again entangled in them and are overcome, the last state has become worse for them than the first.
Jude 1:19
These are the ones who cause divisions, worldly-minded, devoid of the Spirit.

They might

Romans 9:6
But it is not as though the word of God has failed. For they are not all Israel who are descended from Israel;
Romans 11:5
In the same way then, there has also come to be at the present time a remnant according to God’s gracious choice.
1 Corinthians 11:19
For there must also be factions among you, so that those who are approved may become evident among you.
2 Timothy 3:9
But they will not make further progress; for their folly will be obvious to all, just as Jannes’s and Jambres’s folly was also.
Hebrews 10:39
But we are not of those who shrink back to destruction, but of those who have faith to the preserving of the soul.

General references

Matthew 25:2
Five of them were foolish, and five were prudent.
John 10:5
A stranger they simply will not follow, but will flee from him, because they do not know the voice of strangers.”
1 Timothy 5:15
for some have already turned aside to follow Satan.