There is a fierce battle which will not be over until the final day. When Paul gathered the Ephesian elders in Miletus he reminded them how valuable the church is – it is the church of God which He bought with His own blood (Acts 20:28), but he also warned them that savage wolves would come amongst them and would not spare the flock. This was so important to Paul that he spent three years day and night warning them with tears. I suspect that today we would regard Paul as a bit odd; we would turn a deaf ear, tell him to lighten up and not to be so negative. We pay lip service to acknowledging sin, spiritual warfare and the dangers of apostasy.