Went up into a mountain - Το ορος, The mountain. “Meaning,” says Wakefield, “some particular mountain which he was accustomed to frequent; for, whenever it is spoken of at a time when Jesus is in Galilee, it is always discriminated by the article. Compare Mat 4:18, with Mat 5:1; and Mat 13:54, with Mat 14:23; and Mat 28:16. I suppose it was mount Tabor.”