Psalms 94:12

Blessed is the man whom thou chastenest, O Lord
Much more happy now, and hereafter, than the proud insulting persecutor of him; he is chastened of the Lord, that he might not be condemned with the world; he is chastened not in wrath, but in love; not with the chastisement of a cruel one, nor indeed of a magistrate nor a master; but of a tenderhearted father, who always does it for his profit and advantage, and therefore is he "blessed", or happy; for these chastenings are tokens of God's love, evidences of sonship, or of a man's being an adopted child of God; are for, and do work for good, either temporal, spiritual, or eternal, and even in every sense; and, besides, the Lord grants his presence in them, supports under them, and teaches by them, as follows:

and teachest him out of thy law;
or "doctrine" ^F6; and may be understood of the doctrine of the Gospel, as well as of the law; the Lord teaches by his Spirit, his word, and providences; and, even by afflictive ones, he teaches men their sins and transgressions, and shows them wherein they have exceeded; brings them to a sense and confession of them, repentance and reformation; he teaches them hereby their duty, both to himself and all men, which they have neglected, and departed from; he teaches many lessons of faith, patience, humility, self-denial, and submission to his will in the school of affliction; here they learn much of God, of his power and faithfulness, truth, goodness, grace, and love, and of evangelical doctrines; of his everlasting love, of eternal election, the covenant of grace, the righteousness of Christ, and salvation by him; which the Lord makes known unto them at such seasons, and on which account they are pronounced blessed, or happy persons.