# Therefore he

"Therefore Yahweh"

# he poured out on them the heat of his anger

"he showed he people of Israel just how angry he was" 

# and the violence of war

"by devastating them with war" 

# Its flames encircled them ... it consumed them

Isaiah speaks of Yahweh's fierce anger as if it were a fire that burned the people. 

# they did not take it to heart

"they did not pay attention" or "they did not learn from it"