Jesus reminds us that responding as a Christian sometimes stirs up anger and resentment in family and friends.  While peace will come with the Kingdom of God, doing the will of God may cause rifts among loved ones.  Those that are closest to us will sometimes disagree on the necessity of following the path of righteousness.  They may desire to take an easier way and want us to do so also.  At such times, we need to be sure to find our peace in God, not in humankind.  God will always be refuge and aid.