How did Jesus illustrate the remnant in His earthly ministry?

Les teaches that the doctrine of the remnant runs from Genesis through Revelation, and that God has always kept a remnant. He explains that when you get into Christ's earthly ministry, Jesus promotes this truth beautifully with the analogy of the wide way, the broad way, and the narrow way. The mass of humanity goes down the broad way, but the remnant takes the narrow way, and this pattern is all the way through Scripture. Les then connects this to Paul's teaching in the age of grace, where there is a remnant of Jews who become believers of the gospel of grace according to the election of grace, not of law or Judaism. He also points to Elijah being shown 7,000 who had not fallen to idolatry, and to testimonies of Jews who have believed the gospel of grace.