John 3:19-20

And this is the condemnation, that light has come into the world, and men have loved darkness rather than light, because their deeds were evil.

Ephesians 2:1

Even you, being dead to offenses and sins,

Hebrews 6:4-6

For it is impossible to renew again to repentance those who have once been enlightened, and have tasted of the heavenly gift, and have been made partakers of the Holy Spirit,

Hebrews 10:26-27

For if we sin willfully, after we have received the knowledge of the truth, there remains no longer a sacrifice for sins;

Hebrews 10:38

But the just by faith shall live; and if he draw back, my soul will have no pleasure in him.

2 Peter 2:21-22

For it would be better for them not to have known the way of righteousness, than, after having known it, to turn from the holy commandment delivered to them.

1 John 2:19

They went out from us, but they were not of us: for, if they had been of us, they would have remained with us; but they went out, that they might be made manifest that they were not all of us.

Jude 1:12

These, while feasting with you, are- spots in your love-feasts, feeding themselves without fear; they are clouds without water, driven along by winds; trees of autumn, without fruit, twice dead, torn up by the roots: -

Treasury of Scripture Knowledge

Summary

The man that wandereth out of the way of understanding shall remain in the congregation of the dead.

Bible References

Wandereth

John 3:19
And this is the condemnation, that light has come into the world, and men have loved darkness rather than light, because their deeds were evil.
Hebrews 6:4
For it is impossible to renew again to repentance those who have once been enlightened, and have tasted of the heavenly gift, and have been made partakers of the Holy Spirit,
Hebrews 10:26
For if we sin willfully, after we have received the knowledge of the truth, there remains no longer a sacrifice for sins;
2 Peter 2:21
For it would be better for them not to have known the way of righteousness, than, after having known it, to turn from the holy commandment delivered to them.
1 John 2:19
They went out from us, but they were not of us: for, if they had been of us, they would have remained with us; but they went out, that they might be made manifest that they were not all of us.

Remain

Ephesians 2:1
Even you, being dead to offenses and sins,
Jude 1:12
These, while feasting with you, are- spots in your love-feasts, feeding themselves without fear; they are clouds without water, driven along by winds; trees of autumn, without fruit, twice dead, torn up by the roots: -