what Jesus is teaching on everyday matters (τὰ ἐπίγεια, unit 2), it stands to reason that heavenly matters (τὰ ἐπουράνια) should be even more difficult to comprehend. Yet they can be assured that Jesus knows what He is talking about (unit 1). Units 3 and 4 form another semantic cluster: heavenly matters are indeed difficult to grasp. In fact, no one has ever gone up to heaven to see what is involved. However, there is one who can truly explain such matters—the one who came from heaven, the
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