ויקרא, פרק כ״ב, פסוק כ״א

Bringing an offering to God requires absolute perfection, both in the intention of the heart and the physical condition of the animal. This requirement is especially emphasized regarding the peace offering. Because peace offerings are considered to be of lesser sanctity and do not require a strictly male animal like a burnt offering, one might mistakenly assume that physical blemishes could also be overlooked. To prevent this misunderstanding, the standard is made clear: physical perfection is absolutely required, as it is entirely inappropriate to present a flawed or repulsive offering to God [ספורנו, רלב״ג, העמק דבר, רש״ר הירש, ביאור שטיינזלץ].

Offerings are generally driven by two distinct motivations: a vow or a freewill gift. A vow is a firm obligation a person takes upon themselves, typically during a time of distress, promising to bring an offering if God provides salvation. In contrast, a freewill offering is set aside purely out of joy, gratitude, and spontaneous desire, without any prior conditions [הטור הארוך, ביאור יש״ר, שפתי כהן, פירושי רד״צ הופמן]. In either case, dedicating the animal cannot remain a mere thought in the mind. It demands a clear verbal declaration, ensuring that the act of separation is spoken aloud [רש״י, אבן עזרא, חזקוני, שפתי חכמים, ברכת אשר]. While individual offerings are brought in this manner, communal offerings are not presented as freewill gifts, though the rules of dedication apply equally whether an offering is brought by a single individual or by partners sharing the cost [מלבי״ם, חזקוני].

Although the immediate focus is on the peace offering, the principles of physical perfection extend across the entire sacrificial system. The requirement for a flawless animal encompasses sin and guilt offerings, the specific offerings brought by a mother after childbirth or by a Nazirite, as well as animal tithes. Furthermore, the standard of perfection applies to the offspring of dedicated animals or any animal swapped in exchange for a holy one [תורה תמימה, מלבי״ם, אדרת אליהו, צפנת פענח].

The demand for perfection serves as both a positive requirement and a strict warning. It is not merely a condition that the animal must be whole; it is a severe prohibition against intentionally inflicting a blemish on an animal once it has been dedicated to God. This includes directly damaging the animal as well as causing harm indirectly, such as placing dough on an animal's ear so that a dog might bite it off [הכתב והקבלה, תורה תמימה, מלבי״ם, רלב״ג].

Regarding the severity of this prohibition, a debate exists about inflicting a new blemish on an animal that is already flawed. Some commentators maintain that every additional blemish constitutes a separate violation, regardless of the animal's prior condition. Others argue that the prohibition against inflicting harm only applies when the animal is currently perfect and fit to be accepted on the altar. According to this view, one who damages an animal that is already disqualified would be exempt from this specific violation [תורה תמימה, מלבי״ם, פרדס יוסף].