How is the current Jewish remnant like Elijah's 7,000?
The current Jewish remnant parallels Elijah's 7,000 because, just as God showed Elijah 7,000 who had not fallen to idolatry, God keeps a small percentage of Jews in the age of grace. They believe the gospel of grace and are a remnant according to election of grace, not law or Judaism.
Les explains that Scripture contains a doctrine of the remnant: God has always kept a remnant. Christ illustrated this with the broad way and narrow way—the mass goes broad, but the remnant takes the narrow way. Paul then applies it to this age of grace, predominantly Gentile with some Jewish exceptions: at the present time there is a remnant of Jews who have become believers of the gospel of grace, elected not by law or Judaism but by grace. Les compares this to Elijah, who was shown 7,000 who had not fallen to idolatry; likewise today a remnant of Jews recognize the gospel of grace and the election of grace. He mentions reading testimonies of Jews from various backgrounds who came to believe Jesus of Nazareth was the Messiah who died for their sins, confirming they are a remnant, though few can believe it.
God hath not cast away his people which he foreknew. Wot ye not what the scripture saith of Elias? how he maketh intercession to God against Israel, saying,
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