Revelation 12:8

But they did not win and so lost their place in heaven.

Matthew 16:18

And I also tell you, [although] you are Peter [i.e., a stone], it is on this rock [i.e., the truth you have just confessed] that I will build my church and [not even] the gates of the unseen place of departed spirits will win out over it [i.e., all efforts to stamp out the church by killing Christians will fail].

Acts 1:25

to replace Judas in this ministry and this group of apostles, from which he fell away to go to where he belonged" [i.e., to the place of punishment for unrepentant sinners].

Romans 8:31-39

What then should we conclude from this? [Just this]: If God is on our side, who can [successfully] oppose us?

Jude 1:6

And angels, who did not remain within [the bounds of] their proper authority, but left their own realm, God has kept in perpetual bondage, under [thick] darkness, awaiting judgment on the Great Day [when they will be punished].

Revelation 12:11

And they [i.e., the brothers. See 6:9-11] gained the victory over Satan by the blood of the Lamb, and by [remaining true to] the message of their testimony. And they did not love their lives [so much that they refused] to die [for their faith].

Treasury of Scripture Knowledge

Summary

And prevailed not; neither was their place found any more in heaven.

General references

Bible References

Prevailed not

Revelation 12:11
And they [i.e., the brothers. See 6:9-11] gained the victory over Satan by the blood of the Lamb, and by [remaining true to] the message of their testimony. And they did not love their lives [so much that they refused] to die [for their faith].
Matthew 16:18
And I also tell you, [although] you are Peter [i.e., a stone], it is on this rock [i.e., the truth you have just confessed] that I will build my church and [not even] the gates of the unseen place of departed spirits will win out over it [i.e., all efforts to stamp out the church by killing Christians will fail].
Romans 8:31
What then should we conclude from this? [Just this]: If God is on our side, who can [successfully] oppose us?

Their

Acts 1:25
to replace Judas in this ministry and this group of apostles, from which he fell away to go to where he belonged" [i.e., to the place of punishment for unrepentant sinners].
Jude 1:6
And angels, who did not remain within [the bounds of] their proper authority, but left their own realm, God has kept in perpetual bondage, under [thick] darkness, awaiting judgment on the Great Day [when they will be punished].

General references

Matthew 12:29
Or, how can someone enter a strong man's house and steal his belongings unless he first ties up the strong man? Only then will he be able to steal [his belongings] from his house.
Mark 3:27
But no one can enter a strong man's house and steal his belongings unless he first ties up the strong man. Only then will he be able to steal from his house.