'Dark' in the Bible

Give glory to the Lord your God,Before He brings darknessAnd before your feet stumbleOn the dark and shadowy mountains,And while you are longing for lightHe turns it into the shadow of death,And makes it into thick darkness.

“Therefore their way will be to them like slippery pathsIn the dark; they will be pushed and fall into them;For I will bring disaster on them,In the year of their punishment,” says the Lord.