A.T. Robertson Commentary John 5:28

"Marvel not at this: for the hour cometh, in which all that are in the tombs shall hear his voice," — John 5:28 (ASV)

In the tombs (εν τοις μνημειοις). Ταφος (grave) presents the notion of burial (θαπτω, to bury) as in Mt 23:27, μνημειον (from μναομα, μιμνησκω, to remind) is a memorial (sepulchre as a monument). Jesus claims not only the power of life (spiritual) and of judgement, but of power to quicken the actual dead at the Last Day. They will hear his voice and come out (εκπορευσοντα, future middle indicative of εκπορευομα). A general judgement and a general bodily resurrection we have here for both good and bad as in Mt 25:46; Acts 24:15; 2 Corinthians 5:10 and as often implied in the words of Jesus (Matthew 5:29f.; 10:28; Luke 11:32). In Joh 6:39 Jesus asserts that he will raise up the righteous.