# Open the window eastward

"open the window that faces east" 

# so he opened it

"So a servant opened it" 

# he shot

"Joash shot the arrow"

# This is Yahweh's arrow of victory, the arrow of victory over Aram

"This arrow is a sign from Yahweh that he will give you victory over Aram"
 
# Aphek

This was a city in the land of Israel.