For I have no one like him, who will be genuinely concerned for your welfare. (Philippians 2:20, ESV)Paul tells us that he has no on quite like Timothy, and the particular aspect of Timothy, that earns him this recognition, is that Timothy is genuinely, authentically concerned for the welfare of the Philippian Church. Timothy is a living example of what Paul has been teaching in this letter.
For what is our hope or joy or crown of boasting before our Lord Jesus at his coming? Is it not you? (1 Thessalonians 2:19 -- ESV) Three things mentioned here... "hope" ... "joy" ... "crown of boasting" ... Hope - What does Paul have his sights set on? Joy - What is it that brings Paul joy? Crown of Boasting - That Olympic Wreath of Glory that is placed on his head? It is these people. It is his children in the faith. They are Paul's Hope and Joy and Crown of Glory when Jesus returns.