For all the day long - Continually. All my life.
Have I been plagued - Smitten; afflicted; troubled. My life has been a life of trial. I have not known prosperity.
And chastened every morning - Margin, as in Hebrew, “My chastisement was.” That is, my sufferings - my trials - have been repeated with every returning morning. Each new day has brought some new form of affliction, designed to rebuke and punish me. I never have found exemption from trial even for a single day. So different is my lot from the lot of wicked people, who know nothing of this, and who are always prospered and happy. See the notes at Job 7:18.