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.

Acts 19:22

19:22 So after sending two of his assistants, Timothy and Erastus, to Macedonia, he himself stayed on for a while in the province of Asia.