chastening, chastisement, instruction, nurture
Concise Bible Dictionary:
This is in scripture mostly linked with love and sonship, and implies “instruction” and “discipline.” He that loveth chasteneth (Prov. 13:24; Deut. 8:5; Heb. 12:5-11; Rev. 3:19). “Blessed is the man whom thou chastenest” (Psa. 94:12). The chastening at the time does not seem to be joyous but grievous, yet afterward it yields the peaceable fruits of righteousness to those exercised thereby (Heb. 12:11). John 15:2 shows that a Christian may be chastened of the Father that he may bring forth more fruit.
Strong’s Dictionary of Greek Words:
Meaning:
from 3811; tutorage, i.e. education or training; by implication, disciplinary correction
KJV Usage:
chastening, chastisement, instruction, nurture