Now this contributes to our scanty knowledge about heaven. Our knowledge is limited, but where God lives there is no aging. Everybody up in heaven is young. They're trim, they're healthy. And this angel came and he found the tomb.
Angels are tomb finders.
They know how to find the tomb of those who are to experience the resurrection. There's not visual mark on a tombstone of Christians. Well, they guard that spot. They mark that spot somehow. We are told that the spot where the righteous are laid to rest are marked by the angels of heaven.