Reproof is an old fashioned word, in fact the spell checker kept changing it as I used it in the title. It basically means to correct someone, but to correct them with some fervency. A synonym might be to scold strongly or severally. How many of us like to be scolded, or corrected even in a nice way, but one of the repeated messages in the book of Proverbs is that “reproof” is good for us.
Proverbs 13:18. Poverty and shame will come to him who neglects discipline, but he who regards reproof will be honored.
Proverbs 1:22-26 How long, O naive ones, will you love being simple-minded? And scoffers delight themselves in scoffing and fools hate knowledge? Turn to my reproof, behold, I will pour out my spirit on you; I will make my words known to you. Because I called and you refused, I stretched out my hand and no one paid attention; and you neglected all my counsel and did not want my reproof; I will also laugh at your calamity; I will mock when your dread comes.
Proverbs 5:12-14 How I have hated instruction! And my heart spurned reproof! I have not listened to the voice of my teachers, Nor inclined my ear to my instructors! I was almost in utter ruin.
Proverbs 12:1 Whoever loves discipline loves knowledge, but he who hates reproof is stupid.
Proverbs 15:10. Grievous punishment is for him who forsakes the way; He who hates reproof will die.
There are about a dozen consequences listed in the book of Proverbs for being a fool who will not listen to reproof, and there are about a dozen blessings that comes into the life of one who listens and heeds reproof when it comes into their life, and a major blessing is wisdom. Probably the reason there are so many dumb people in our world today is that there are so few people who are humble enough to listen and receive reproof without getting defensive or upset.
Being unteachable, and resistant to reproof is a pride issue. If we would work at learning to listen to ourselves when we talk we would hear ourselves being defensive, and generally acting like a fool when someone corrects us.