Romans 8:32

Since He did not spare His own Son but gave Him up for us all, will He not with Him graciously give us everything else?

Romans 11:21

for if God did not spare the natural branches, certainly He will not spare you.

1 Corinthians 10:22

Or, are we trying to incite the Lord to jealousy? We are not stronger than He, are we?

Hebrews 12:29

for our God, indeed, is a consuming fire.

2 Peter 2:4-5

For if God did not spare angels when they sinned, but hurled them down to Tartarus and committed them to dark dungeons to await their doom,

Revelation 3:5

Whoever conquers will be clothed this way -- in white clothes -- and I will never blot his name out of the book of life, but I will own him as mine in the presence of my Father and His angels.

Treasury of Scripture Knowledge

Summary

The LORD will not spare him, but then the anger of the LORD and his jealousy shall smoke against that man, and all the curses that are written in this book shall lie upon him, and the LORD shall blot out his name from under heaven.

His jealousy

Bible References

Will not spare

Romans 8:32
Since He did not spare His own Son but gave Him up for us all, will He not with Him graciously give us everything else?
Romans 11:21
for if God did not spare the natural branches, certainly He will not spare you.
2 Peter 2:4
For if God did not spare angels when they sinned, but hurled them down to Tartarus and committed them to dark dungeons to await their doom,

His jealousy

1 Corinthians 10:22
Or, are we trying to incite the Lord to jealousy? We are not stronger than He, are we?