My son, despise not the chastening of the LORD; neither be weary of his correction:

Wesley's Notes

3:11 Despise not - Either by making light of it, or not being duly affected with it; or by accounting it an unnecessary thing: but rather esteem it a privilege and favour from God. Weary - Neither think it tedious or hard, but endure it with patience and chearfulness.

Jamieson-Fausset-Brown Bible Commentary

11, 12. The true intent of afflictions considered; they do not contradict the assertion of the blessed state of the pious (Job 5:17; Heb 12:5, 6).

Matthew Henry's Concise Commentary

3:7-12 There is not a greater enemy to the fear of the Lord in the heart, than self-conceit of our own wisdom. The prudence and sobriety which religion teaches, tend not only to the health of the soul, but to the health of the body. Worldly wealth is but poor substance, yet, such as it is, we must honour God with it; and those that do good with what they have, shall have more to do more good with. Should the Lord visit us with trials and sickness, let us not forget that the exhortation speaks to us as to children, for our good. We must not faint under an affliction, be it ever so heavy and long, not be driven to despair, or use wrong means for relief. The father corrects the son whom he loves, because he loves him, and desires that he may be wise and good. Afflictions are so far from doing God's children any hurt, that, by the grace of God, they promote their holiness.