Proverbs 4:19 in the King James Version
The way of the wicked is as darkness: they know not at what they stumble.
Context
18 But the path of the righteous is like the dawning light that shines more and more until the perfect day.
19 The way of the wicked is like darkness. They don’t know what they stumble over.
20 My son, attend to my words. Turn your ear to my sayings.