במדבר, פרק ל״ה, פסוק י״ח

When a person strikes another and causes their death, the law carefully evaluates both the type of weapon used and its lethal potential. In establishing the legal criteria for intentional murder, there is a specific focus on the use of wooden objects and the direct nature of the killing. Not every blow delivered with a piece of wood qualifies as intentional murder; the object must realistically be capable of causing death [שטיינזלץ]. This clarification is essential because other laws discuss striking a slave with a rod, which could lead to the mistaken belief that any strike with wood, no matter how small, warrants the death penalty. To prevent this misunderstanding, the law requires the wooden object to be of sufficient size and mass to be lethal [רש״י, מלבי״ם]. Furthermore, the lethal potential is not measured solely by the object itself. The court must also examine the force of the specific blow, the vulnerability of the body part that was struck, and the physical strength of both the attacker and the victim [מלבי״ם, משכיל לדוד].

While one might assume that a wooden weapon must be a formal, crafted tool held directly in the hand, commentators agree that the law simply reflects common human habits. The rule applies equally to unshaped wood, such as thrown beams, poles, or random pieces of timber. The guiding principle is not whether the object meets the formal definition of a tool, but rather its overall capacity to cause death [רלב״ג, תורה תמימה, מלבי״ם].

The legal focus on materials like iron, stone, and wood establishes a broader framework. The common factor among these materials is that death results directly from the attacker's action and the destructive object. This framework excludes cases of indirect murder from punishment by a human court. For example, if a person sets a dangerous animal like a dog or a snake on someone, or removes a ladder from a pit to prevent the victim from escaping, the court cannot execute the attacker. In these indirect scenarios, the attacker has indeed shed blood, and God will hold him fully accountable, but human judges cannot impose the death penalty. Conversely, when the attacker's action is direct and continuous, such as holding someone's face underwater or in a fire until they die, or locking them in a smoke-filled room, the act is treated as if he strangled the victim with his own bare hands, making him fully liable for death [תורה תמימה].

Because of these many scenarios, the absolute legal ruling is that the attacker is a murderer who must face execution. This final standard emphasizes that the exact shape of the wooden object is irrelevant, just as it does not matter whether the object was held closely in the hand or thrown from a distance. As long as the conditions of a direct and lethal strike are met, the offender is classified as a murderer and is subject to the death penalty [תורה תמימה, מלבי״ם].