Prophesy revealed through the prophets:
Isaiah 60:3 KJV
(3) And the Gentiles shall come to thy light, and kings to the brightness of thy rising.
Mystery revealed through Paul:
Romans 11:11 KJV(11) I say then, Have they stumbled that they should fall? God forbid: but rather through their fall salvation is come unto the Gentiles, for to provoke them to jealousy.
Things that differ are not the same.
Because the remnant is not the same as the ethne! Surely you know this. That's why Lk 2:34 says there is both. You are reading the whole race where you are not supposed to. Rom 11:30 says God no longer does, if we didn't already realize.