Ye know not what is implied in being advanced in my kingdom, and necessarily prerequired thereto. All who share in my kingdom must first share in my sufferings. Are you able and willing to do this? Both these expressions, The cup, the baptism, are to be understood of his sufferings and death. The like expressions are common among the Jews.
Related Commentaries of Matthew 20:22
Matthew 20:22
22 But Jesus answered and said,Ye know not what ye ask. Are ye able to drink of the cup that I shall drink of, and to be baptized with the baptism that I am baptized with? They say unto him, We are able.