Ten brothers conspired. Ten brothers sold Joseph. Ten brothers dipped the coat in goat's blood. But when it came time to actually bring the coat to their father, Targum Pseudo-Jonathan on (Genesis 37:32) reveals a stunning detail: they could not do it themselves.
They sent the coat by the hand of the sons of Zilpha and of the sons of Bilhah — Gad, Asher, Dan, and Naphtali, the sons of the handmaids. The four brothers who were not part of the original plot. The four who had the weakest standing in the family hierarchy. The ones who could claim, if the story unraveled, that they had only delivered a package.
The Targumist is exposing a cowardice at the heart of the crime. The brothers who planned it could not face their father. They outsourced the lie. They made the lowest-ranked members of the household carry the forged evidence up to Jacob's tent and say the words: this have we found.
Notice the construction of the sentence they were told to speak. They do not say Joseph is dead. They do not make any positive claim at all. They offer an object and a question. Know now, whether it be thy son's garment, or not. Let the father diagnose. Let him utter the conclusion. Let him convict Joseph of dying, so the brothers never have to.
Sin almost always looks for a delivery system. The people who make the decision and the people who carry the weight are rarely the same. The Targum preserves this detail as a warning: watch who is asked to bring you the package. Often, the real culprits are still standing in the field, waiting to hear whether it worked.