# I will bring a sword on you

"I will bring an enemy army against you" or "I will cause an enemy army to attack you" 

# that will execute vengeance

"that will punish you"

# for breaking the covenant

"for disobeying the covenant" or "because you disobey the covenant"

# You will be gathered together

"You will gather together" or "You will hide" 

# you will be delivered into the hand of your enemy

"I will deliver you into the hand of your enemy" or "I will allow your enemy to control you"