When the entire community of Israel sinned by accident, who took responsibility? The Hebrew Bible says "the elders of the congregation" laid their hands on the bull (Leviticus 4:15). The Targum Jonathan gets specific: twelve elders—counselors appointed over the twelve tribes—performed this act.
This is a significant addition. The standard text leaves the number of elders vague. The Targum maps the sin offering directly onto Israel's tribal structure, ensuring that every tribe was represented in the act of atonement. No tribe could claim innocence. No tribe could be excluded from the process of repair.
The chapter builds a hierarchy of sin offerings: the anointed high priest, the whole congregation, the ruler, and the common person each have different requirements. The Targum adds clarifying details at each level. The high priest sinned "as when he hath offered a sin offering for the people not according to the rite"—giving a concrete example where the Hebrew Bible leaves the nature of the sin abstract. The ruler is called "the ruler of his people," emphasizing that leadership comes with heightened accountability.
Throughout, the Targum specifies the right hand for laying on the animal, adds "the slayer" as a distinct ritual functionary, and describes how blood was placed in basins before being sprinkled. These additions systematize what the Hebrew Bible leaves ambiguous, building a complete picture of Temple procedure.
The most important theological thread: inadvertent sin still requires atonement. The Targum never softens this. Ignorance is not innocence. Even the high priest, anointed with sacred oil, must bring a bull when he errs.