Cosmas Indicopleustes

The five who were wise went in with the bridegroom into the bride-chamber, that is, into heaven, because, since they were wise, they chose virginity and alms-giving—but the foolish virgins who had chosen the one of these but despised the other, remained outside of the bride-chamber, having found the door shut, and heard these words: Depart from me, I know you not; being neither permitted to enter, nor condemned along with the impious, but remaining outside of the bride-chamber.

The Christian Topography, Book 5 ↗

Augustine of Hippo

It is not said that they bought any oil, and therefore we must suppose that all their delight in the praise of men being gone, they return in distress and affliction to implore God. But His severity, after judgment, is as great as His mercy was unspeakable before. …

Catena Aurea by Aquinas ↗

Jerome

But he answered and said, Amen I say to you, I do not know you. The Lord knows those who are His, and those who do not know, will not be known (2 Timothy 2:19). The Lord does not know the workers of iniquity: and although they may be virgins, and boast of their bodily purity and true confession of faith (1 Corinthians 14:38); yet because they do not have the oil of knowledge, it is enough for them as punishment that they are unknown by the Bridegroom.

Commentary on Matthew ↗

Gregory the Dialogist

"But I say to you that none of those men who were invited shall taste my supper." Behold, he calls through himself, he calls through angels, he calls through the fathers, he calls through the prophets, he calls through the apostles, he calls through pastors, he calls also through us, he often calls through miracles, he often calls through scourges, he sometimes calls through the prosperity of this world, he sometimes calls through adversity. …

Forty Gospel Homilies, Homily 36 ↗