Finally then, brothers, we beg and exhort you in the Lord Jesus, that as you received from us how you ought to walk and to please God, that you abound more and more.
How ye ought to walk ...  Paul's use of this metaphor for living the Christian life is extensive.  Implicit in this remark is the fact that Paul and his fellow-preachers had instructed the Thessalonians at the time of their conversion in the basic requirements of Christian living, making his admonitions here to be a plea that they would continue faithfully in the instructions they had already received.