The word "Apostle" signifies "one sent", while the word "disciple" means only "a learner." The twelve Apostles were sent into the world for a definite purpose, with explicit instructions from the Lord.
According to Matthew, this commission embraced,
According to Mark, it embraced,
According to Luke, it embraced,
According to John, it embraced, under the condition laid down by Jesus, the power to remit and retain sins ( John 20:22 John 20:23 ).