At the head of a new section, Paul draws together all that he has been saying since 1:24 into a powerful, simple statement. Paul now puts things very simply. This is what he wants for them as an apostle. This is what he is aiming at in his ministry. Here is how to live the Christian life.
The 5th Commandment may be the one we have heard the most over the course of our lives. We were told it when we were children, even babies. But there is more here than a word about how little children should behave. Indeed, this fifth word is filled with significance.