This crime and its punishment was codified in Roman law. The disciples were puzzled by the parable and asked Jesus to explain it. He replied by saying that at the end of the age the angels of God would separate the evil from the good. The lessons of this parable are clear, but they are not easy. The parable helps us to understand that there will always be tares in the wheat field.
Life is difficult.
The rain falls upon the just and the unjust. Jesus never promised us that we might become so good or so wise that no tares would ever grow in our wheat fields. No matter how hard we work or how good we may be, something or someone comes by while we are sleeping and sows tares in our field. When we discover tares in the wheat field, we should not belittle ourselves or despair. Guilt, blame and shame only complicate the problem.