Explanatory Notes on the Whole Bible, by John Wesley, [1754-65], at sacred-texts.com
psa 129:1From my youth - From the time that I was a people.
psa 129:4Righteous - Faithful or merciful. The cords - Wherewith the plow was drawn. By these cords he understands all their plots and endeavours.
psa 129:6House - tops - Which there were flat. Which - Having no deep root, never comes to maturity. And so all their designs shall be abortive.
psa 129:8The blessing - Which was an usual salutation given by passengers to reapers: so the meaning is, it never continues 'till the harvest comes.