In Mark 10:35-45 we read:
35 And James and John, the sons of Zebedee, come unto him, saying, Master, we would that thou shouldest do for us whatsoever we shall desire. 36 And he said unto them, What would ye that I should do for you? 37 They said unto him, Grant unto us that we may sit, one on thy right hand, and the other on thy left hand, in thy glory.
38 But Jesus said unto them, Ye know not what ye ask: can ye drink of the cup that I drink of? and be baptized with the baptism that I am baptized with? 39 And they said unto him, We can. And Jesus said unto them, Ye shall indeed drink of the cup that I drink of; and with the baptism that I am baptized withal shall ye be baptized: 40 But to sit on my right hand and on my left hand is not mine to give; but it shall be given to them for whom it is prepared.
If Peter was the one with the primacy as we Catholics assert, why did James and John fight to be in the prime position? Isn’t this a case where the Protestant claim (or the Orthodox claim) that Peter was just one of 12 apostles rather than the rock upon which the church should be built? Shouldn’t James and John have realized that Peter was first among them?