STORY:
 As a young kid, steve always had someone to teach him the skills he knows today (e.g enchanting, crafting, etc.). As he learnt, he improved, and improved. At last, he became stronger than his teacher. His teacher grew jealous of the power and at first tried to trick him into weakening himself. This failed, and now, he has built a suit of armour to help him destroy steve.

How it relates:
Since steve's teacher is experienced in minecraft, he has quite a lot of power and knowledge of how to use his skills and how to combat others, making it an enourmous challenge for steve.