NET

30 At that time they will growl over their prey, it will sound like sea waves crashing against rocks. One will look out over the land and see the darkness of disaster, clouds will turn the light into darkness.

Darby

30 and they shall roar against them in that day like the roaring of the sea. And if one look upon the earth, behold darkness [and] distress, and the light is darkened in the heavens thereof.

KJV

30 And in that day they shall roar against them like the roaring of the sea: and if [one] look unto the land, behold darkness [and] sorrow, and the light is darkened in the heavens thereof.