1 John 2:19

They went out from us, but they didn't belong to us; for if they had belonged to us, they would have continued with us. But they left, that they might be revealed that none of them belong to us.

Acts 20:30

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

1 Corinthians 11:19

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

Deuteronomy 13:13

Certain base fellows are gone out from the midst of you, and have drawn away the inhabitants of their city, saying, "Let us go and serve other gods," which you have not known;

Job 17:9

Yet shall the righteous hold on his way. He who has clean hands shall grow stronger and stronger.

Psalm 37:28

For Yahweh loves justice, and doesn't forsake his saints. They are preserved forever, but the children of the wicked shall be cut off.

Psalm 41:9

Yes, my own familiar friend, in whom I trusted, who ate bread with me, has lifted up his heel against me.

Psalm 125:1-2

Those who trust in Yahweh are as Mount Zion, which can't be moved, but remains forever.

Jeremiah 32:38-40

and they shall be my people, and I will be their God:

Matthew 13:20-21

What was sown on the rocky places, this is he who hears the word, and immediately with joy receives it;

Matthew 24:24

For there will arise false christs, and false prophets, and they will show great signs and wonders, so as to lead astray, if possible, even the chosen ones.

Mark 4:5-6

Others fell on the rocky ground, where it had little soil, and immediately it sprang up, because it had no depth of soil.

Mark 4:16-17

These in the same way are those who are sown on the rocky places, who, when they have heard the word, immediately receive it with joy.

Mark 13:22

For there will arise false christs and false prophets, and will show signs and wonders, that they may lead astray, if possible, even the chosen ones.

Luke 8:13

Those on the rock are they who, when they hear, receive the word with joy; but these have no root, who believe for a while, then fall away in time of temptation.

John 4:14

but whoever drinks of the water that I will give him will never thirst again; 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 those who the Father gives me will come to me. Him who comes to me I will in no way throw out.

John 10:28-30

I give eternal life to them. They will never perish, and no one will snatch them out of my hand.

John 15:2

Every branch in me that doesn't bear fruit, he takes away. Every branch that bears fruit, he prunes, that it may bear more fruit.

Acts 15:24

Because we have heard that some who went out from us have troubled you with words, unsettling your souls, saying, 'You must be circumcised and keep the law,' to whom we gave no commandment;

Romans 9:6

But it is not as though the word of God has come to nothing. For they are not all Israel, that are of Israel.

Romans 11:5-6

Even so then at this present time also there is a remnant according to the election of grace.

2 Timothy 2:10

Therefore I endure all things for the chosen ones' sake, that they also may obtain the salvation which is in Christ Jesus with eternal glory.

2 Timothy 2:19

However God's firm foundation stands, having this seal, "The Lord knows those who are his," and, "Let every one who names the name of the Lord depart from unrighteousness."

2 Timothy 3:9

But they will proceed no further. For their folly will be evident to all men, as theirs also came to be.

Hebrews 10:39

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

1 Peter 1:2-5

according to the foreknowledge of God the Father, in sanctification of the Spirit, that you may obey Jesus Christ and be sprinkled with his blood: Grace to you and peace be multiplied.

2 Peter 2:20-21

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

Jude 1:1

Jude, a servant of Jesus Christ, and brother of James, to those who are called, sanctified by God the Father, and kept for Jesus Christ:

Jude 1:19

These are they who cause divisions, and are sensual, not having 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
Certain base fellows are gone out from the midst of you, and have drawn away the inhabitants of their city, saying, "Let us go and serve other gods," which you have not known;
Psalm 41:9
Yes, my own familiar friend, in whom I trusted, who ate bread with me, has lifted up his heel against me.
Matthew 13:20
What was sown on the rocky places, this is he who hears the word, and immediately with joy receives it;
Mark 4:5
Others fell on the rocky ground, where it had little soil, and immediately it sprang up, because it had no depth of soil.
Luke 8:13
Those on the rock are they who, when they hear, receive the word with joy; but these have no root, who believe for a while, then fall away in time of temptation.
John 15:2
Every branch in me that doesn't bear fruit, he takes away. Every branch that bears fruit, he prunes, that it may bear more fruit.
Acts 15:24
Because we have heard that some who went out from us have troubled you with words, unsettling your souls, saying, 'You must be circumcised and keep the law,' to whom we gave no commandment;
Acts 20:30
Men will arise from among your own selves, speaking perverse things, to draw away the disciples after them.
2 Peter 2:20
For if, after they have escaped the defilement of the world through the knowledge of the Lord and Savior Jesus Christ, they are again entangled in it and overcome, the last state has become worse for them than the first.
Jude 1:19
These are they who cause divisions, and are sensual, not having the Spirit.

They might

Romans 9:6
But it is not as though the word of God has come to nothing. For they are not all Israel, that are of Israel.
Romans 11:5
Even so then at this present time also there is a remnant according to the election of grace.
1 Corinthians 11:19
For there also must be factions among you, that those who are approved may be revealed among you.
2 Timothy 3:9
But they will proceed no further. For their folly will be evident to all men, as theirs also came to be.
Hebrews 10:39
But we are not of those who shrink back to destruction, but of those who have faith to the saving of the soul.

General references

Matthew 25:2
Five of them were foolish, and five were wise.
John 10:5
They will by no means follow a stranger, but will flee from him; for they don't know the voice of strangers."
1 Timothy 5:15
For already some have turned aside after Satan.