Gregory the Dialogist

But we must consider what is said: "All who see it begin to mock him," because, according to the voice of Paul, "We have been made a spectacle to the world, to angels and to men." And in everything we do, we ought to consider our hidden adversaries, who always press upon our works, who always rejoice at our failure. …

Forty Gospel Homilies, Homily 37 ↗

Bede

Lest after he has laid the foundation, and is not able to finish it, all who see it begin to mock him, saying, 'This man began to build and was not able to finish.' For, according to Paul's words, we have been made a spectacle to the world, to angels and to men. And in all that we do, we must consider our hidden adversaries, who always pay attention to our works, always rejoice in our shortcomings. Observing whom the Prophet says: "My God, in you I trust, I will not be ashamed, nor let my enemies mock me" (Psalm 25). …

On the Gospel of Luke ↗

Bonaventure

Third, with regard to the avoidance of impending reproach, he adds: Lest, after he has laid the foundation, namely by undertaking a higher state in imitating Christ — and this is to lay the foundation: First Corinthians 3: "For no one can lay another foundation besides that which has been laid, which is Christ Jesus." One begins to lay this foundation through faith and good works, according to Matthew 7: "Everyone who hears these words of mine and does them is like a man who built his house upon the rock." Upon this rock he places …

Commentary on Luke, Chapter 14 ↗