Afflictions are not infelicities, but benefits and comforts, because their are testimonies of God's love, which is infinitely more desirable than any evil can be terrible. They show God's purpose, and desire, and care to purge us from our sins, and to make us fit for his presence and kingdom. This and the former verse seem to be here inserted in the midst of his commendations of wisdom, to remove an objection against the excellency and happiness of wise or pious men, taken from those many calamities to which such persons are frequently exposed, the reason of which providence he here giveth.
Related Commentaries of Proverbs 3:12
Proverbs 3:12
12 For whom the LORD loveth he correcteth; even as a father the son in whom he delighteth.