Galatia is the central region of present-day Turkey.
Paul visited it during his 1st, 2nd, and 3rd missionary journeys.
Acts 14:1At Iconium Paul and Barnabas went as usual into the Jewish synagogue. There they spoke so effectively that a great number of Jews and Greeks believed.
Acts 16:1Paul came to Derbe and Lystra, where a disciple named Timothy lived, whose mother was Jewish and a believer, but whose father was a Greek.
Acts 18:23After spending some time there, he set out and traveled from place to place throughout the region of Galatia and Phrygia, strengthening all the disciples.
Peter also sent a letter to this place.
1 Peter 1:1Peter, an apostle of Jesus Christ, To God’s elect, exiles scattered throughout Pontus, Galatia, Cappadocia, Asia and Bithynia,