2 Corinthians 2:13
I had no rest in my spirit, because I found not Titus my brother: but taking my leave of them, I went from thence into Macedonia.
Cross-references
2 Corinthians 7:5 describes the same restless arrival in Macedonia, directly continuing the narrative from this verse.
2 Corinthians 7:6 provides the resolution: God comforted Paul by the arrival of Titus, whom he anxiously sought here.
2 Corinthians 12:18 mentions Paul urging Titus to go to Corinth—a later reference to their partnership, echoing the anxiety here over not finding him.
In Acts 20:1, Paul departs for Macedonia after the Ephesian riot, parallel to his journey here after not finding Titus.
In Acts 20:2, Paul travels through Macedonia to Greece, continuing the itinerary that began in Macedonia here.
In Acts 16:10, Paul is called to Macedonia on an earlier journey, whereas here he goes there later—shared location, different events.