Basil of Caesarea

He perhaps speaks to those whom the Apostle describes in his own person, saying, If I speak with the tongues of men and of angels, and have all knowledge, and give all my goods to feed the poor, but have not charity, it profiteth me nothing. For whatever is done not from regard to the love of God, but to gain praise from men, obtains no praise from God.

Catena Aurea by Aquinas ↗

Bede

And He will say to you: I do not know where you come from. Depart from me, all you workers of iniquity. He does not (say) that the feasting of legal festivals helps, one whom the piety of faith does not commend, the knowledge of Scriptures does not make known to God, whom the iniquity of deeds shows to His eyes as unworthy.

On the Gospel of Luke ↗

Bonaventure

And since the allegation of knowledge avails little without the allegation of imitation and work, therefore he adds: And he will say to you: I do not know you, whence you are. Chrysostom: "I do not recognize my image in you. You cannot receive the wages of my soldiers, you who have carried the banners of the tyrant." Chrysostom says this not with respect to the image of creation, of which it is said in the Psalm: "Man passes through as an image"; but with respect to the image of re-creation, of which Augustine says: "The Lord does …

Commentary on Luke, Chapter 13 ↗