What benefit is it to me if I help someone move from a position of weakness to one of strength?
In war, make allies. Help someone and demand they ally their strength with yours.
G-d and Israel were allies at war.
Who is my ally? An ally is certainly one who does not pass by on the other side. Avail yourself of many as allies as possible.
“Love your enemy?” Let him turn and make an ally of him for future wars.
And what of him who does not turn? … and what of the traitor?
Make a “footstool” of him!