An angry mob confronts a father who has just discovered that his son, Gideon, destroyed the local center of worship. Instead of apologizing or surrendering to the crowd's demands, the father, Joash, uses sharp rhetoric, internal logic, and psychological tactics to defuse the tension and save his son. He holds up a mirror to the townspeople, exposing the futility of their beliefs. Responding to their demands, Joash challenges the mob with a double rhetorical question, asking if they intend to fight for Baal or save him.
The primary approach among commentators is that Joash presents a logical paradox: Is it appropriate for humans to fight on behalf of Baal and avenge his honor? The very act of mobilizing to protect him proves a lack of true belief in his power and divinity, as a true deity does not need human protection [רלב״ג, ביאור שטיינזלץ]. The dual nature of his question covers all logical possibilities. If Baal has the power to take revenge but chooses not to, why should the people fight for him? Conversely, if he wants revenge but lacks the power, how can the people possibly save him? [מלבי״ם]. Another perspective suggests that Joash challenged them to physically save the idol itself, which was already broken. This created a fear among the mob that any further struggle might cause more damage to the statue, effectively deterring them from taking action [אלשיך].
As Joash continues his defense, he declares that whoever fights for Baal will be put to death by morning. Commentators offer three distinct ways to understand who is meant to die and who will do the killing. One view suggests the threat is directed squarely at the townspeople. As a local leader and the owner of the altar, Joash warns that anyone in the mob who fights for Baal will be executed by him immediately, before the morning even arrives [מצודת דוד, רלב״ג]. A second approach argues that the intended victim is actually Gideon, and the executioner is supposed to be Baal himself. Joash claims that whoever destroys an altar deserves to be killed by the offended deity by morning. The fact that morning had already come and Gideon was still alive proves that Baal possesses no real power or substance [רד״ק, מלבי״ם, ביאור שטיינזלץ]. A third approach views this entire declaration as a stalling tactic. Joash asks the mob to wait until morning to see if Baal will take revenge, but his true goal is simply to buy enough time for Gideon to escape [רש״י].
Joash concludes his argument with a simple premise: if Baal possesses true divinity, he will fight his own battles, and there is no need for the townspeople to do it for him [רש״י, מצודת דוד]. The mob falls silent and accepts the argument. This reaction reveals that their idolatry did not stem from deep, genuine faith, but rather from a superficial imitation of the surrounding culture [ביאור שטיינזלץ]. Following this confrontation, Gideon receives the new name Jerubbaal, designed to pacify the crowd. The name gives the townspeople the impression that they are simply waiting for Baal to fight him, while subtly hinting at the exact opposite: it is Baal who should fear Gideon [רלב״ג, אלשיך].