Dark and slippery. — See margin. Delitzsch supposes an allusion to the passage of the Red Sea, but the picture suggests rather the passage of some dangerous mountain pass in a raging storm. “The tracks in the limestone hills of Palestine are often worn as smooth as marble; comp. Psalms 73:18” (quoted from Kay, in the Speaker’s Commentary).
Related Commentaries of Psalms 35:6
Psalms 35:6
6 Let their way be darka and slippery: and let the angel of the LORD persecute them.