The spiritual climate of cultures is a significant reason that people remain unreached. Though God uses the arduous toil of faithful missionaries, a breakthrough of God’s Spirit must precede a spiritual harvest. Across Europe, Christian history and symbolism are abundant, yet many modern Europeans are resistant to the gospel. Their Christian history has seemingly inoculated them against the transforming message of the gospel. However, the sovereign work of the Holy Spirit penetrates even the most spiritually resistant cultures.