1 Corinthians 16:10

16:10 Now if Timothy comes, see that he has nothing to fear among you, for he is doing the Lord’s work, as I am too.

1 Corinthians 4:17

4:17 For this reason, I have sent Timothy to you, who is my dear and faithful son in the Lord. He will remind you of my ways in Christ, as I teach them everywhere in every church.