Do we work for salvation or is it a gift from God?
Salvation is not earned by works; it is totally a gift of God. The wages of sin is death, but salvation is a gift of God. Therefore, no one works for salvation as a wage; it is received as God's gracious gift, not as something earned by human effort.
Les teaches from 1 Corinthians chapter 3, where the discussion concerns reward, and he emphasizes repeatedly that salvation is not something we work for. He contrasts the wages of sin, which is death, with salvation, which is totally a gift of God. The believer's works relate to reward, but salvation itself is God's gift, not earned.
Romans 6:23
For the wages of sin is death; but the gift of God is eternal life through Jesus Christ our Lord.