Hebrews 4:1; Hebrews 10:29; Hebrews 12:10; Hebrews 12:11

Hebrews 4:1

1 Therefore, let us fear if, while a promise remains of entering His rest, any one of you may seem to have come short of it.

Hebrews 10:29

29 How much severer punishment do you think he will deserve who has trampled under foot the Son of God, and has regarded as unclean the blood of the covenant by which he was sanctified, and has insulted the Spirit of grace?

Hebrews 12:10

10 For they disciplined us for a short time as seemed best to them, but He disciplines us for our good, so that we may share His holiness.

Hebrews 12:11

11 All discipline for the moment seems not to be joyful, but sorrowful; yet to those who have been trained by it, afterwards it yields the peaceful fruit of righteousness.