Ancient Greek Expositor

He next charges the parents, astonished at the miracle, and almost crying out, not to publish abroad what was done. As it follows, And her parents were astonished; but he charged them that they should tell no man what was done; showing that He is the Giver of good things, but not covetous of glory, and that He gives the whole, receiving nothing. But he who seeks after the glory of his works has indeed shown forth something, but receives something.

Catena Aurea by Aquinas ↗

Bede

And his parents, he says, were amazed, and he commanded them not to tell anyone what had happened. The young man was raised outside the gate, with a large crowd accompanying and watching. Lazarus, called forth from the tomb, became so widely known to the people that due to the witness of those who saw it, many crowds met the Lord with palms, and many from among the Jews went away and believed in Jesus. …

On the Gospel of Luke ↗

Bonaventure

Whence it is also added: And her parents were astonished, as though unable to bear the magnitude of divine power: Isaiah 29, "Behold, I will proceed to do a marvelous work among this people, a great and stupendous miracle." Moreover, this astonishment elevated the faith of believers to an excess, according to that passage in Acts 10: "The faithful of the circumcision were astonished," etc. …

Commentary on Luke, Chapter 8 ↗