I would need a verb (or a phrase) that describes what a plough does to the earth (literally) and can apply to the earth of our heart in a metaphorical way. This is a positive connotation that may involve pain, but leads to a good result. The context could be something like:
Hardship and afflictions ____ the earth of our heart(, plough it), uproot all the weeds so that we may be delivered of every regret, so that we may be able to look forward.
What word would you suggest after "afflictions"? Whatever the plough does to the earth reveals things that were concealed underneath. This is the meaning the author is trying to convey.
I would be grateful for any suggestion, even if it only partially covers all the connotations that I have given.