Cyril of Alexandria

But when Christ returns, having taken unto Himself His kingdom, the ministers of the word will receive their deserved praises and delight in heavenly rewards, because they multiplied their talent by acquiring more talents, as it is added, Then came the first, saying, Lord, thy pound has gained ten pounds.

Catena Aurea by Aquinas ↗

Theophylact of Ohrid

"When he returns" — Christ, noble both in His humanity (for the Lord was of royal lineage) and in His Divinity, at His second coming, when He shall appear with the apostles as King, coming in the glory of the Father, and when every knee shall bow before Him, then He will indeed demand an accounting from the servants who received the gifts.

Commentary on Luke ↗

Augustine of Hippo

He also returns after having received His kingdom, because in all glory will He come who appeared lowly to them to whom He said, My kingdom is not of this world. (John 18:36.)

Catena Aurea by Aquinas ↗

Bede

And he ordered the servants to be called to whom he had given the money, that he might know what each had gained by trading. To know, he said, not that anything should be hidden from him, to whom it is truly said: "Lord, you know all things." But to know, he says, is to make everyone know. For then the works and thoughts of all shall be plainly shown to everyone. As in Deuteronomy: He tests you, he says, the Lord your God, that he might know if you love him (Deut. XIII), that is, to make it known. …

On the Gospel of Luke ↗

Bonaventure

And it came to pass, that he returned, etc. After he described the state of merit, he here describes the form and state of judgment, which indeed the Evangelist describes: first, generally with respect to all; second, with respect to the faithful servants, at the passage: And the first came saying; third, with respect to the negligent, at the passage: And the third came saying; fourth, with respect to the rebellious, at the passage: But those enemies of mine, etc. …

Commentary on Luke, Chapter 19 ↗