Bill Hull

“First-century discipleship was expressed as a servant-master relationship (see Matthew 10:24). Once accepted as a disciple, a young man started as a talmidh, or beginner, who sat in the back of the room and could not speak. Then he became a distinguished student, who took an independent line in his approach or questioning. At the next level, he became a disciple-associate, who sat immediately behind the rabbi during prayer time. Finally he achieved the highest level, a disciple of the wise, and was recognized as the intellectual equal of his rabbi.'"
2. Memorizing the teacher's words: Oral tradition provided the basic way of studying. Disciples learned the teacher's words verbatim to pass along to the next person. Often disciples learned as many as
four interpretations of each major passage in the Torah.
3. Learning the teacher's way of ministry: A disciple learned how his teacher kept God's commands, including how he practiced the Sabbath, fasted, prayed, and said blessings in ceremonial situations. He would also learn his rabbi's teaching methods and the many traditions his master followed.
4. Imitating the teacher's life and character: Jesus said that when a disciple is fully taught, he "will be like his teacher" (Luke 6:40). The highest calling of a disciple was to imitate his teacher. Paul called on Timothy to follow his example (see 2 Timothy 3:10-14), and he didn't hesitate to call on all believers to do the same (see 1 Corinthians 4:14-16; 1 1:1; Philippians 4:9). One story in ancient tradition tells of a rabbinical student so devoted to his teacher that he hid in the teacher's bedchamber to discover the mentor's sexual technique. To be sure, this is a bit extreme, yet it demonstrates the level of commitment required to be a disciple.
5. Raising up their own disciples: When a disciple finished his training, he was expected to reproduce what he'd learned by finding and training his own apprentices. He would start his own school and call it after his name, such as the House of Hillel.”
― Bill Hull, The Complete Book of Discipleship: On Being and Making Followers of Christ