The Three Nephites and a Sign of the Times

In our family scripture reading, we have been reading Third Nephi from The Book of Mormon and I came across a sign of the times of which I was unaware. I'm sure many of the you (speaking of the LDS readers) probably were aware of this, but for some reason, it had not come to my attention. Anyway, in 3 Nephi, Chapter 28, it states concerning the three Nephites:

27 And behold they will be among the Gentiles, and the Gentiles shall know them not.

28 They will also be among the Jews, and the Jews shall know them not.

29 And it shall come to pass, when the Lord seeth fit in his wisdom that they shall minister unto all the scattered tribes of Israel, and unto all nations, kindreds, tongues and people, and shall bring out of them unto Jesus many souls, that their desire may be fulfilled, and also because of the convincing power of God which is in them.

30 And they are as the angels of God, and if they shall pray unto the Father in the name of Jesus they can show themselves unto whatsoever man it seemeth them good.

31 Therefore, great and marvelous works shall be wrought by them, before the great and coming day when all people must surely stand before the judgment-seat of Christ;

32 Yea even among the Gentiles shall there be a great and marvelous work wrought by them, before that judgment day.