KJV
And his feet shall stand in that day upon the mount of Olives, which is before Jerusalem on the east, and the mount of Olives shall cleave in the midst thereof toward the east and toward the west, and there shall be a very great valley; and half of the mountain shall remove toward the north, and half of it toward the south.
Hebrew (Masoretic)
וְעָמְד֣וּ רַגְלָ֣יו בַּיּוֹם־ הַ֠הוּא עַל־ הַ֨ר הַזֵּתִ֜ים אֲשֶׁ֨ר עַל־ פְּנֵ֥י יְרוּשָׁלִַם֮ מִקֶּדֶם֒ וְנִבְקַע֩ הַ֨ר הַזֵּיתִ֤ים מֵֽחֶצְיוֹ֙ מִזְרָ֣חָה וָיָ֔מָּה גֵּ֖יא גְּדוֹלָ֣ה מְאֹ֑ד וּמָ֨שׁ חֲצִ֥י הָהָ֛ר צָפ֖וֹנָה וְחֶצְיוֹ־ נֶֽגְבָּה׃
Septuagint (LXX)
καὶ στήσονται οἱ πόδες αὐτοῦ ἐν τῇ ἡμέρᾳ ἐκείνῃ ἐπὶ τὸ ὄρος τῶν ἐλαιῶν τὸ κατέναντι Ιερουσαλημ ἐξ ἀνατολῶν καὶ σχισθήσεται τὸ ὄρος τῶν ἐλαιῶν τὸ ἥμισυ αὐτοῦ πρὸς ἀνατολὰς καὶ τὸ ἥμισυ αὐτοῦ πρὸς θάλασσαν χάος μέγα σφόδρα καὶ κλινεῖ τὸ ἥμισυ τοῦ ὄρους πρὸς βορρᾶν καὶ τὸ ἥμισυ αὐτοῦ πρὸς νότον