Why is salvation personal and individual rather than something God does for groups?
Scripture contrasts a nation asking, "What must we do?" with an individual asking, "What must I do?" God does not save people in groups or lumps; He saves one at a time, individually. That is why the personal aspect of salvation is stressed, rather than a corporate or group salvation.
Les teaches by comparing Acts 2 with Acts 16. In Acts 2, Peter is addressing Jews, and the nation of Israel is on trial; the nation asks, "Men and brethren, what shall we do?" In Acts 16, the setting is Gentile ground, and the question comes from an individual: "What must I do?" Les says, "See the difference? All the difference in the world." Now the focus is individual Gentiles. He states plainly that God does not save people in lumps; He saves us one at a time, individually. That is why the personal aspect of salvation is stressed. He even suggests that in eternity believers will have personal times with the Lord.