Chapter 3 is about obeying you parents, what you should do and what you should not do. Basically said the same thing he did but in different words! for me it was kind of a hard chapter to understand but verse 3:15 stuck out to me.
As this passage talks about the qualifications of what a leader in the church should look like, i think we need to take it a bit further and say almost a leader anywhere. There is no reason we can't uphold these things in other positions of leadership and doing all this will display the Christina qualities. The last states one of our core truths and that the church is a Church of the Living God. He came to us and is within us to help guide us and direct the church (and we as the church)