John Chrysostom — as excerpted in the Catena Aurea on John 5:31-40

“(Hom. xl. 3) But it was impossible for them to declare that they had received, and obeyed God’s commands: and therefore He adds, Ye have not His word abiding in you; i. e. the commandments, the law, and the prophets; though God instituted them, ye have them not. For if the Scriptures every where tell you to believe on Me, and ye believe not, it is manifest that His word is gone from you: For whom He hath sent, Him ye believe not.”