John Calvin on John 12:17-18

17. The multitude gave their testimony. He again repeats what he had said, that many persons, aroused by the report of so great a miracle, came to meet Christ. The reason why they go out in crowds is, that the rumor, respecting Lazarus who had been restored to life, was widely spread. They had good reason, therefore, for ascribing to the son of Mary the honor of the Messiah, since he was known to possess such extraordinary power.