10 And now behold, this I speak unto their seed, and also to the Gentiles who have care for the house of Israel, that realize and know from whence their blessings come.
Mormon speaks at length in this chapter about our day and the conditions of the world when the Gospel will come forth. One condition would be that many of the gentiles would have a feeling of stewardship for the Jews and a newfound recognition that the blessings of Christendom all flow from the Jewish people. 

It seems that with such an increase there was also a corresponding increase in anti-semitism and hatred for the Jewish people– culminating in the holocuast.

Nevertheless, the past 200 years have seen a stunning reversal of centuries of ill will between Jew and Gentile, as Gentile nations worked for the restoration of Israel. God has inspired many people with a great love and care for his chosen people