King James Version (KJV)
Give glory to the LORD your God, before he cause darkness, and before your feet stumble upon the dark mountains, and, while ye look for light, he turn it into the shadow of death, {and} make {it} gross darkness.
Modern English
Give glory to Yahweh your God, before he causes darkness, and before your feet stumble on the dark mountains, and, while you look for light, he turns it into the shadow of death, and makes it deep darkness.
Hebrew
תְּנוּ֩ לַיהוָ֨ה אֱלֹהֵיכֶ֤ם כָּבוֹד֙ בְּטֶ֣רֶם יַחְשִׁ֔ךְ וּבְטֶ֛רֶם יִֽתְנַגְּפ֥וּ רַגְלֵיכֶ֖ם עַל־הָ֣רֵי נָ֑שֶׁף וְקִוִּיתֶ֤ם לְאוֹר֙ וְשָׂמָ֣הּ לְצַלְמָ֔וֶת ישית וְשִׁ֖ית לַעֲרָפֶֽל׃
tnv layhvah ʾeloheykem kabvod bṭerem yaḥshik vbṭerem yitnagpv ragleykem ʿal-harey nashef vqiviytem lʾvor vshamah lṣalmavet yshyt vshiyt laʿarapel