A.W. Tozer illustrates the church as an ark amidst the floodwaters, emphasizing that just as Noah's ark was the sole means of salvation during the flood, the church of Jesus Christ serves as the only refuge for the saved in a perishing world. He stresses that being part of the church is essential for salvation, as it is the body of Christ where life is found, and outside of it, there is only loss. Tozer clarifies that while joining a local church does not guarantee salvation, Christ is the door to the true church, and one must enter through Him. He warns against the independent Christian life, which neglects the importance of being part of a church community, despite the presence of hypocrites. Ultimately, Tozer calls for recognition of the church's vital role in God's plan for salvation.