Afterward the children of Israel shall return, and seek Yahweh their God, and David their king, and shall come with trembling to Yahweh and to his blessings in the last days.
There is hardly any need to multiply names and citations from discerning scholars of all ages who have accepted this passage as a reference to the glorious age of Jesus Christ during that present dispensation, during which his holy name is honored literally all over the world.  The participation of the new Israel in this is certain, nor do the words of this passage (or any other) deny the possibility that even remnants of the old Israel may yet come to the feast.  However, to affirm that such a thing "will be" is to go beyond the word of the Lord.