Isa 9:1, Mt 15:27-28, Lk 17:11-18, Mt 4:12-17, Mk 1:14

In the Old Testament, Joshua saved the Gibeonites who made a pact with the Israelites. (Joshua 10:12-14)

Joshua 10:12 Then spake Joshua to the Lord in the day when the Lord delivered up the Amorites before the children of Israel, and he said in the sight of Israel, Sun, stand thou still upon Gibeon; and thou, Moon, in the valley of Ajalon. 13 And the sun stood still, and the moon stayed, until the people had avenged themselves upon their enemies. Is not this written in the book of Jasher? So the sun stood still in the midst of heaven, and hasted not to go down about a whole day. 14 And there was no day like that before it or after it, that the Lord hearkened unto the voice of a man: for the Lord fought for Israel.

In the Old Testament it was foretold that God would glorify the Gentiles. (Isa 9:1)

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.

As the Christ, Jesus preached the gospel to the Gentiles and provided salvation according to the prophecies of the Old Testament. (Matthew 15:27-28, Luke 17:11-18, Matthew 4:12-17, Mark 1:14)

Matthew 15:27 And she said, Truth, Lord: yet the dogs eat of the crumbs which fall from their masters' table. 28 Then Jesus answered and said unto her, O woman, great is thy faith: be it unto thee even as thou wilt. And her daughter was made whole from that very hour.

Luke 17:11 And it came to pass, as he went to Jerusalem, that he passed through the midst of Samaria and Galilee. 12 And as he entered into a certain village, there met him ten men that were lepers, which stood afar off: 13 And they lifted up their voices, and said, Jesus, Master, have mercy on us. 14 And when he saw them, he said unto them, Go shew yourselves unto the priests. And it came to pass, that, as they went, they were cleansed. 15 And one of them, when he saw that he was healed, turned back, and with a loud voice glorified God, 16 And fell down on his face at his feet, giving him thanks: and he was a Samaritan. 17 And Jesus answering said, Were there not ten cleansed? but where are the nine? 18 There are not found that returned to give glory to God, save this stranger.

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. 17 From that time Jesus began to preach, and to say, Repent: for the kingdom of heaven is at hand.

Mark 1:14 Now after that John was put in prison, Jesus came into Galilee, preaching the gospel of the kingdom of God,