Thematic Bible: Why the lord chastens people

You must submit to and endure [correction] for discipline; God is dealing with you as with sons. For what son is there whom his father does not [thus] train and correct and discipline? Now if you are exempt from correction and left without discipline in which all [of God's children] share, then you are illegitimate offspring and not true sons [at all]. Moreover, we have had earthly fathers who disciplined us and we yielded [to them] and respected [them for training us]. Shall we not much more cheerfully submit to the Father of spirits and so [truly] live? read more.
For [our earthly fathers] disciplined us for only a short period of time and chastised us as seemed proper and good to them; but He disciplines us for our certain good, that we may become sharers in His own holiness.

For if we searchingly examined ourselves [detecting our shortcomings and recognizing our own condition], we should not be judged and penalty decreed [by the divine judgment]. But when we [fall short and] are judged by the Lord, we are disciplined and chastened, so that we may not [finally] be condemned [to eternal punishment along] with the world.