After exhausting every effort to reach dry land, the sailors face a grim reality. They realize they have no choice but to follow Jonah's instruction and cast him into the raging sea. Faced with this heavy decision, the men reach a profound moment of belief in God and unite in a shared prayer [אבן עזרא, ביאור שטיינזלץ]. In their plea, they present a deep moral and existential dilemma. They beg God not to hold them responsible for shedding innocent blood, asking that their own lives not be lost, whether physically or spiritually, as a result of what they are about to do [ביאור שטיינזלץ].
The primary approach among commentators is that the sailors are terrified of divine retribution. They plead that God should not punish them or wipe them from the world for the sin of laying their hands on Jonah [רש״י, מצודת דוד, ביאור שטיינזלץ]. At the same time, their desperate prayer highlights a tragic double bind [אבן עזרא]. If they keep Jonah on board, they will drown because of his sins. Yet, if they throw him overboard to save themselves, they risk being punished for murder. They recognize that even when a person acts as an instrument of heavenly justice, they can still bear the heavy guilt of ending a human life [מלבי״ם].
To resolve this impossible situation, the sailors justify their impending action by acknowledging God's absolute control. It is clear to them beyond any doubt that the violent storm is raging exclusively because of Jonah [אבן עזרא]. They reason that if God had wanted to end Jonah's life without their involvement, He easily could have done so. Instead, God deliberately sent the storm and cornered them into a desperate position where throwing Jonah overboard is their only means of survival. They conclude that this must be His direct decree. Therefore, they ask that the responsibility for the act be placed entirely on God, who willed it to happen, rather than on themselves [מצודת דוד, מלבי״ם].