17 I appeal to you, brothers, to watch out for those who cause divisions and create obstacles xcontrary to the doctrine that you have been taught; yavoid them. 18 For such persons do not serve our Lord Christ, but ztheir own appetites,6 and aby smooth talk and flattery they deceive the hearts of the naive. 19 For byour obedience is known to all, so that I rejoice over you, but I want you cto be wise as to what is good and innocent as to what is evil. 20 dThe God of peace ewill soon crush Satan under your feet. fThe grace of our Lord Jesus Christ be with you.