Biblia Hebraica 10,21כא. וַיֹּאמֶר יְהֹוָה אֶל משֶׁה נְטֵה יָדְךָ עַל הַשָּׁמַיִם וִיהִי חשֶׁךְ עַל אֶרֶץ מִצְרָיִם וְיָמֵשׁ חשֶׁךְ:
Septuaginta 3rd c. B.C. 10,21εἶπεν δὲ κύριος πρὸς Μωυσῆν ἔκτεινον τὴν χεῖρά σου εἰς τὸν οὐρανόν καὶ γενηθήτω σκότος ἐπὶ γῆν Αἰγύπτου ψηλαφητὸν σκότος
King James Bible 1611 A.D. 10,2121 And the LORD said unto Moses, Stretch out thine hand toward heaven, that there may be darkness over the land of Egypt, even darkness which may be felt.
http://www2.hf.uio.no/common/apps/permlink/permlink.php?app=polyglotta&context=record&uid=bb375cc7-a4bd-11e4-856a-001cc4ddf0f4