Macedonia.

Acts 16:9, 10
During the night, Paul had a vision of a man of Macedonia standing and pleading with him, "Come over to Macedonia and help us." . . .

Acts 18:5
And when Silas and Timothy came down from Macedonia, Paul devoted himself fully to the word, testifying to the Jews that Jesus is the Christ.

Acts 20:1
When the uproar had ended, Paul sent for the disciples. After he had encouraged them, he said goodbye to them and left for Macedonia.

2 Corinthians 1:16
I wanted to visit you on my way to Macedonia, and to return to you from Macedonia, and then to have you help me on my way to Judea.

2 Corinthians 2:13
I had no peace in my spirit, because I did not find my brother Titus there. So I said goodbye to them and went on to Macedonia.

2 Corinthians 8:1
Now, brothers, we want you to know about the grace God has given the churches of Macedonia.

2 Corinthians 11:9
And when I was with you and in need, I was not a burden to anyone; for the brothers who came from Macedonia supplied my needs. I have refrained from being a burden to you in any way, and I will continue to do so.

1 Thessalonians 1:8
For not only did the message of the Lord ring out from you to Macedonia and Achaia, but your faith in God has gone out to every place, so that we have no need to say anything further.

that ministered.

Acts 13:5
When they arrived at Salamis, they proclaimed the word of God in the Jewish synagogues. And John was with them as their helper.

Acts 16:3
Paul wanted Timothy to accompany him, so he took him and circumcised him on account of the Jews in that area, for they all knew that his father was a Greek.

Erastus.

Romans 16:23
Gaius, who has hosted me and all the church, sends you greetings. Erastus, the city treasurer, sends you greetings, as does our brother Quartus.

2 Timothy 4:20
Erastus has remained at Corinth, and Trophimus I left sick in Miletus.