11.10.19 Do What? Why We Preach. 2 Timothy 4:1-8 Preaching has been a way for the people of God to encounter God for a very long time. It is useful to Teach, Reproof, Correct, and Exhort. Preaching is meant to challenge and think about the way we live. It should shape our doctrine rightly, it should remind us of who we are in Christ.