Note; here is a tentative proposal for discussion. I suggest that chapter 1 and chapter 4 are trying to get Timothy to go to see Paul in prison, something he is reluctant to do.

A. Don’t be ashamed of the gospel or Paul 1:1-18

B. Endure hardship  2:1-14

C. Focus on sound exposition of scripture 2:15-26

D.  False teachers will arise 3:1-9

B’. Paul endured and was delivered 3:10-12

C’. Focus on sound exposition of scripture 3:13-17

D’. False teachers will arise 4:1-8

A’. Visit Paul in prison who is about to be executed 4:9-22