Acts 16:10
And after he had seen the vision, immediately we endeavoured to go into Macedonia, assuredly gathering that the Lord had called us for to preach the gospel unto them.
Cross-reference
Acts 19:22 later shows Paul sending Timothy and Erastus to Macedonia, continuing the mission that began with the call in Acts 16:10.
Acts 21:8 continues the 'we' narrative that began in Acts 16:10, marking Luke's ongoing presence with Paul.
Acts 27:2 includes 'we' (Luke) and a Macedonian companion, echoing the mission launched by the Macedonian call in Acts 16:10.
2 Corinthians 2:13 describes Paul leaving Troas for Macedonia, mirroring the journey initiated by the vision in Acts 16:10.
In 2 Timothy 4:11, Luke is with Paul, confirming the 'we' in Acts 16:10 is Luke, the author and companion.
2 Corinthians 2:12 also mentions Paul's ministry in Troas with an open door, the same location where he received the Macedonian call in Acts 16:10.