I appeal to you therefore, brothers, by the mercies of God, to present your bodies as a living sacrifice, holy and acceptable to God, which is your spiritual worship. Do not be conformed to this world, but be transformed by the renewal of your mind, that by testing you may discern what is the will of God, what is good and acceptable and perfect. For by the grace given to me I say to everyone among you not to think of himself more highly than he ought to think, but to think with sober judgment, each according to the measure of faith that God has assigned.

So in the grand beginning of his practical section, Paul says to worship and not be conformed to the world but to learn God’s will.  How? By being humble.

Not only does he begin this way, but as you read Romans 12-15 16 you find that it is the constant theme in his exhorations.

I shouldn’t be surprised by this.  All those lessons against boasting in Romans 2 and 3 and 11 really mean something.

Postscript: Even winding down on chapter 16 Paul still has the same concern:

I appeal to you, brothers, to watch out for those who cause divisions and create obstacles contrary to the doctrine that you have been taught; avoid them. For such persons do not serve our Lord Christ, but their own appetites, and by smooth talk and flattery they deceive the hearts of the naive. For your obedience is known to all, so that I rejoice over you, but I want you to be wise as to what is good and innocent as to what is evil. The God of peace will soon crush Satan under your feet. The grace of our Lord Jesus Christ be with you.