David Wilkerson emphasizes that revival is possible if we believe in God's desire to pour out His Spirit, despite feelings of hopelessness and judgment. He reflects on God's mercy, highlighting that America has not been judged because there is still a great harvest and God desires all to come to repentance. Wilkerson draws parallels between God's plea to Judah in Isaiah and His current call to America, urging the nation to recognize that God has not abandoned them but is actively seeking their return. He encourages believers to remain hopeful and assured that the Spirit is working to draw people back to God. The message is a call to repentance and a reminder of God's enduring love and grace.