In the parable there is a clear crescendo of soil conditions for growth. So in the best soil scenario we would spontaneously expect that the yield would be always 100-fold. Yet Jesus tells us that in some cases it was indeed 100-fold, but in some other cases it was only 60-fold or even 30-fold. What can the Lord be telling us through this? I believe the Lord is teaching us a twofold lesson. First lesson: we cannot judge other people’s yield. It may well be that others are offering optimum soil for growth, but they have been given low-yield grain. We just have no way of knowing what the Lord has planted in their hearts and any expectation on our side lacks a basis for assessment. This means that we simply cannot judge what may appear to us to be low yield.
Second lesson: self-perfectionism does not belong in the spiritual life for the parallel reason that we do not know what type of seed the Lord has planted in our own hearts. Even if we prepare optimum soil conditions, we do not have to yield the theoretically possible maximum, nor do we have to make it to the Guinness book of records.