# When your people Israel are defeated by an enemy

"When an enemy defeats your people Israel" 

# because they have sinned against you

"because your people Israel have sinned against you"

# if they turn back to you

"if they submit to you again" 

# confess your name

"confess that they have sinned against you" or "praise you" or "say that they will obey you from now on."

# seek favor before you

"seek your favor" or "ask you to forgive them"