Verses 1-5: Greeting and Thanksgiving. Paul opens with his apostolic authority and expresses heartfelt gratitude for Timothy’s sincere faith, rooted in his family heritage.
Verses 6-10: Exhortation to Courage and Remembrance of God’s Calling. Paul urges Timothy to stir up his spiritual gift and not be ashamed of the gospel, reminding him of God’s purpose and grace given before the ages.
Verses 11-14: Paul's Ministry and Charge to Timothy. Paul declares his role as preacher and teacher, encourages Timothy to hold fast to sound doctrine, and to guard the entrusted gospel by the Holy Spirit.
Verses 15-18: Faithfulness and Desertion Among Believers. Paul contrasts those who have abandoned him with Onesiphorus, who faithfully sought and refreshed him, praying for mercy upon him.