“There is nowhere in the NT that says that Christ came to save the Gentiles.”
Simeon’s prophecy in Luke 2:32, “A light to lighten the Gentiles, and the glory of thy people Israel” which is a fulfillment of Isaiah’s prophecy in Isa. 49:6, “And he said, It is a light thing that thou shouldest be my servant to raise up the tribes of Jacob, and to restore the preserved of Israel: I will also give thee for a light to the Gentiles, that thou mayest be my salvation unto the end of the earth.”
What is interesting about the Isaiah prophecy is it says that the ministry of the “servant” would be secret and he would be subject to the rulers of his time, but ultimately all rulers would worship him.
“It has everything to do with the mindset of the authors of the NT. They were seeing the world through the eyes of Judaism, not Christianity”
Luke was probably Greek writing to Greeks using the Greek form of historical research and forms.
The Septuagint says "It is a great thing for you to be called My servant, to establish the tribes of Jacob, and to recover the dispersion of Israel; behold, I have given you for the covenant of a race, for a light of the Gentiles, that you should be for salvation to the end of the earth."
The Gentiles are merely to receive the knowledge of the God of Abraham. It doesn't say anything about their salvation. The whole verse is about Israel the Jewish race.
The prophesy is in line with the concept of a Jewish messiah. The world will learn of the God of Abraham through him, because he will establish the rule of God over the entire earth. Through him the Jews will be saved "to the end of the earth."
Luke was probably Greek writing to Greeks using the Greek form of historical research and forms
He believed in Sheol (Luke 16), not in heaven, even though hie wrote his Gospel after the Resurrection. He believes that the righteous are carried by the angels into the bosom of Abraham. And the rich man is begging Abraham to reduce his torment. If he was Greek, he was probably a Greek-speaking Jew, or otherwise accepted what Paul told him as fact.