NET

16 Show the Lord your God the respect that is due him. Do it before he brings the darkness of disaster. Do it before you stumble into distress like a traveler on the mountains at twilight. Do it before he turns the light of deliverance you hope for into the darkness and gloom of exile.

Darby

16 Give glory to Jehovah your God, before he cause darkness, and before your feet stumble upon the mountains of twilight; and ye shall look for light, but he will turn it into the shadow of death, and make [it] gross darkness.

KJV

16 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.