Charles H. Spurgeon on Psalms 129:3

The plowers plowed, etc. The great Husbandman who owns this plough (at least by whose permission this plough goes), is God. Not only is it God who makes your common ploughs to gang, and sends the gospel into a land, but it is God also who disposes and overrules this same plough of persecution. For without his license the plough cannot be yoked; and being yoked, cannot enter to gang till he direct; and he tempers the irons, so that they cannot go one inch deeper than he thinks meet. When he thinks it time to quit work, then presently he cuts their cords, so that they cannot go once about after he thinks it time to quit work. Albeit when they yoke, they resolve to have all the land upside down, yet he will let them plough no more of it than he sees meet. Now for the ploughmen of this plough, they are Satan and the evil angels; they hold the plough, and are goad men to it; and they yoke in the oxen into the plough, and drive them up with their goads. And they have a sort of music also, which they whistle into their ears, to make them go the faster; and that is the allurements and provocations of the world. And for the oxen who draw into this plough, it may be princes when they turn persecutors of the kirk; it may be prelates; it may be politicians in the world: these are the oxen, Satan and the ill spirits inciting them, and stirring them up to go forward in their intended course. Then consider here that the plough and the ploughmen and oxen go about as God thinks meet; but what is it that they are doing in the meantime? Nothing else but preparing the ground for seed, and so the Lord employs them to prepare his people better to receive the seed of his word and of his Spirit. —Alexander Henderson.