Romans 15:25 confirms Paul's intention to go to Jerusalem with the collection, as considered here.

2 Corinthians 8:19 describes a brother chosen to travel with Paul for the collection, exactly the arrangement suggested here.

2 Corinthians 8:4 shows the Macedonians' eagerness for the same collection Paul discusses here.

Acts 11:30 records an earlier relief collection sent to Jerusalem, paralleling Paul's current plan.