R.A. Torrey emphasizes the gravity of rejecting God's gracious invitation as illustrated in the parable of the great supper in Luke 14:15-24. He discusses how the invited guests made absurd excuses to decline the invitation, reflecting a common human tendency to prioritize earthly concerns over spiritual ones. Torrey highlights that God's invitation is extended to all, including the marginalized, and that those who refuse it will face consequences. The sermon calls for a sincere acceptance of God's invitation, urging listeners to recognize the importance of responding without delay. Ultimately, Torrey stresses that God's house will be filled, regardless of those who reject His call.