Charles Ellicott Commentary Acts 28:4

"And when the barbarians saw the [venomous] creature hanging from his hand, they said one to another, No doubt this man is a murderer, whom, though he hath escaped from the sea, yet Justice hath not suffered to live." — Acts 28:4 (ASV)

The venomous beast.—The adjective, as the italics show, is not in the Greek, and can hardly be said to be necessary.

No doubt this man is a murderer.—They knew, we may believe, that St. Paul was a prisoner. It is hardly conceivable, indeed, that he could have come on shore bound by two chains, or even one, to his keeper, but, looking to the jealous care which the soldiers had shown in the custody of the prisoners (Acts 27:42), it would be natural that they should resume their vigilance over him as soon as they were all safe on shore. And so the natives of Melita, seeing what they did, and ignorant of the prisoner’s crime, and with their rough notions of the divine government of the world, rushed to the conclusion that they were looking on an example of God’s vengeance against murder. It was in vain that such a criminal had escaped the waves; a more terrible death was waiting for him.