Is the grace that keeps us saved the same grace that saves us?
It is the same grace. The grace of God that saves is the same grace that keeps believers. Many accept God's grace for salvation but cannot comprehend that this same grace keeps them. God continues to keep believers by His grace because they cannot live perfectly in their humanity.
Les explains that the grace of God is what saves us, and most people readily accept that. However, he emphasizes that many cannot comprehend that the same grace is what keeps us. He notes that we do not deserve to be saved even six hours of the day, because we cannot live perfectly as humans, though we desire to. Therefore, God continues to keep us by His grace—His grace, His grace, His grace. He cannot emphasize this enough.