# I appointed for you watchmen to listen for the ram's horn

Yahweh speaks of his prophets as if they were watchmen who were sent to warn the people of danger.

# appointed for you

The word "you" refers to the people of Israel.

# to listen for the ram's horn

"to listen to the sound of the ram's horn." Yahweh speaks of warning about the danger that would come. The prophets were to listen to the warning and tell the people about it.