Well, if you believe that James had the authority to tell everyone what to do, what would be a start.
1 Corinthians 15:3-7 New American Standard Bible (NASB)
For I delivered to you as of first importance what I also received, that Christ died for our sins according to the Scriptures, 4 and that He was buried, and that He was raised on the third day according to the Scriptures, 5 and that He appeared to Cephas, then to the twelve. 6 After that He appeared to more than five hundred brethren at one time, most of whom remain until now, but some have fallen asleep; 7 then He appeared to James, then to all the apostles;
Jesus singled out James and appeared to him even before the Apostles.