Mt 4:12-16, Lk 2:28-32, Jn 2:11, Lk 4:14-15
In the Old Testament, Isaiah prophesied that the light of salvation would shine even to the Gentiles in the future. (Isa 9:1-2)
Isa 9:1 Nevertheless the dimness shall not be such as was in her vexation, when at the first he lightly afflicted the land of Zebulun and the land of Naphtali, and afterward did more grievously afflict her by the way of the sea, beyond Jordan, in Galilee of the nations. 2 The people that walked in darkness have seen a great light: they that dwell in the land of the shadow of death, upon them hath the light shined.
As prophesied in the Old Testament, Jesus preached the gospel in Galilee, a Gentile region. (Matthew 4:12-16, John 2:11, Luke 4:14)
Matthew 4:12 Now when Jesus had heard that John was cast into prison, he departed into Galilee; 13 And leaving Nazareth, he came and dwelt in Capernaum, which is upon the sea coast, in the borders of Zabulon and Nephthalim: 14 That it might be fulfilled which was spoken by Esaias the prophet, saying, 15 The land of Zabulon, and the land of Nephthalim, by the way of the sea, beyond Jordan, Galilee of the Gentiles; 16 The people which sat in darkness saw great light; and to them which sat in the region and shadow of death light is sprung up.
John 2:11 This beginning of miracles did Jesus in Cana of Galilee, and manifested forth his glory; and his disciples believed on him.
Luke 4:14 And Jesus returned in the power of the Spirit into Galilee: and there went out a fame of him through all the region round about.
Simeon held the baby Jesus and confessed that Jesus was the light that illuminates the Gentiles. (Luke 2:28-32)
Luke 2:28 Then took he him up in his arms, and blessed God, and said, 29 Lord, now lettest thou thy servant depart in peace, according to thy word: 30 For mine eyes have seen thy salvation, 31 Which thou hast prepared before the face of all people; 32 A light to lighten the Gentiles, and the glory of thy people Israel.