Romans 2:4

Or, do you despise the riches of His kindness and forbearance and longsuffering, not knowing that the goodness of God is leading you to repentance?

Romans 11:20

Well; by their unbelief they were broken off, but you have been standing by faith. Do not cherish lofty thoughts; but fear.

Hebrews 4:1

Let us, therefore, fear, lest a promise still being left of entering into His rest, any one of you should seem to have come short of it.

1 Peter 1:17

And, if ye call on Him as Father, Who, without respect of persons, judgeth according to each one's work, pass the time of your sojourning in fear;

Treasury of Scripture Knowledge

Summary

Happy is the man that feareth alway: but he that hardeneth his heart shall fall into mischief.

General references

Bible References

Happy

Romans 11:20
Well; by their unbelief they were broken off, but you have been standing by faith. Do not cherish lofty thoughts; but fear.
Hebrews 4:1
Let us, therefore, fear, lest a promise still being left of entering into His rest, any one of you should seem to have come short of it.
1 Peter 1:17
And, if ye call on Him as Father, Who, without respect of persons, judgeth according to each one's work, pass the time of your sojourning in fear;

General references

1 Corinthians 10:12
Wherefore, let him who thinks he is standing take heed, lest he fall.