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.
One can never be satisfied with merely being a half-hearted Christian, just doing what is convenient and easy. Commitment is required, as well as a willing devotion to duty. One cannot be passive or lazy but must actively seek to please God. In urging the Thessalonians to "abound more and more," Paul may have been thinking of the statement of Jesus, "I am come that they may have life and that more abundantly" (John 10:10).