# Be silent, you inhabitants of the coast

Isaiah speaks to the people who live on the coast as if they could hear him.

# of the coast

The "coast" is the land near or around the sea or ocean. Here it refers to the people who live in Phoenicia which borders the Mediterranean sea.

# the merchant of Sidon, who travels over the sea, has filled you

"the merchants of Sidon, who travel over the sea, have made you rich"