When God called Apostle Paul to do the ministry, Paul did not go to anyone to know more about Jesus Christ and learn to how to do his ministry, rather, the Lord Himself taught everything to Paul, and the teachings were exactly same as how Christ had trained His disciples - 15.But when God, who set me apart from my mother’s womb and called me by his grace, was pleased 16.to reveal his Son in me so that I might preach him among the Gentiles, my immediate response was not to consult any human being. 17.I did not go up to Jerusalem to see those who were apostles before I was, but I went into Arabia. Later I returned to Damascus - Galatians 1:15-17
At the time of Paul, there was no Bible, but we have a Bible to know more Jesus Christ and learn how to do his ministry, Apostle Matthew compiled all the ministry instructions that Jesus gave to his disciples, and composed them like a Bible college text book in Matthew 10th chapter.
However, Mark and Luke have composed them like a practical class book, and articulated how Jesus Christ lived with his disciples, and trained them like a sports team coach, through class room training, practical class training, and transformed the uneducated, stubborn and unruly into His own children who could live according to His law and carry the Gospel to the entire world, It's like a three years degree program, and only 12 of them got the admission, and the curriculum got tougher and tougher every year, the curriculums are very unique and will see them in below topics.
First-Year Curriculum
Lesson 1: They could not even eat bread
Lesson 2: How will you understand other parables?
Lesson 3: Let's go over to the other side
Lesson 4: Who touched my garments?
Lesson 5: Tell what great things God has done
Second-Year Curriculum
Lesson 6: They did not even have time to eat
Lesson 7: For they had not understood about the loaves
Lesson 8: Washing of pots and cups
Lesson 9: Children's Crumbs
Lesson 10: They had only one Loaf
Lesson 11: When the disciples reached the other side
Lesson 12: You are the Christ
Third-Year Curriculum
Lesson 13: O faithless generation
Lesson 13: What were you disputing?
Lesson 14: In Your name
Lesson 15: I have set an example
Lesson 16: As they sat at the table