Small compromises can look harmless, especially when obedience feels costly. Israel enters the promised land with God-given victories, but bends His commands, adopts its neighbours’ gods, and gradually loses the ground it gained. The deepest threat is not the culture outside but the unbelief within, which turns disobedience into practical atheism and brings God’s justice. Yet God repeatedly raises deliverers for His distressed people, and Jesus defeats this self-destructive enemy, giving hope for repentance, forgiveness, and a life made different by His Spirit.