2 Timothy 2:15: A Workman Approved by God
Paul tells Timothy to give diligence in presenting himself approved by God, a worker unashamed because he handles the word of truth rightly. Serious study of Scripture is disciplined labor aimed at faithfulness, not at winning arguments.
1 Timothy 4:12: An Example to Believers in Youth
Paul does not tell Timothy to defend his youthfulness but to make his life legible to the whole church. A congregation that ministers to college students can cultivate that kind of example rather than merely managing a category.