Luke 6:17

And he came down with them, and stood in the plain Rather, And descending with them, He stopped on a level place. Topos pedinosalso occurs in Isaiah 13:2, LXX. If it be thus rendered there is no discrepancy between St Matthew, who says that "He went up into the mountain, and when He sat down His disciples approached Him" (Matthew 5:1). I believe that St Luke here meant to give such portions of the Sermon on the Mount as suited his design. Combining the two narratives with what we know of the scene we see that what occurred was as follows. The previous evening Jesus went to one of the peaks of Kurn Hattin (withdrawing Himself from His disciples, who doubtless bivouacked at no great distance), and spent the night in prayer. In the morning He called His disciples and chose Twelve Apostles. Then going with them to some level spot, either the flat space (called in Greek plax) between the two peaks of the hill, or some other spot near at hand, He preached His sermon primarily to His disciples who sat immediately around Him, but also to the multitudes. There is no need to assume two discourses one esoteric and one exoteric, &c. At the same time there is of course no difficulty in supposing that our Lord may have uttered the same discourse, or parts of the same discourse, more than once, varying it as occasion required.

out of all Judea St Matthew adds Galilee (which was to a great extent Greek), Decapolis, and Peraea; St Mark also mentions Idumaea. Thus there were Jews, Greeks, Phoenicians, and Arabs among our Lord's hearers.