[Mathew Ward]

Paul did teach discipleship 1 Thessalonians 2:3-13.

1. Spoke the Bible - Their Purpose (v3-6)
2. Gentle Leading - Their Progress (v7-8)
3. Living Examples - Their Pattern (v9-10)
4. Individual Attention - Their Provision (v11-12)
5. Taught the Word - Their Primer (v13)

A disciple is simply a "Student of Christ", in order for there to be a student there must also be a teacher or mentor. You could also describe it in terms of an apprentice.