Charles Finney emphasizes the critical nature of revivals in the church, drawing parallels to Nehemiah's determination to rebuild Jerusalem despite opposition. He outlines various hindrances to revivals, including lack of faith, complacency among Christians, and distractions from worldly concerns. Finney argues that the church must actively engage in promoting revivals through prayer, repentance, and a commitment to God's work, warning against pride and self-indulgence that can quench the Spirit. He calls for a collective effort to address issues like slavery and temperance, asserting that the church's stance on these matters directly impacts the success of revivals.