to be a help to one―help to do something―tend to do something―have a share in doing something―be instrumental in doing something―contribute to some result―conduce to some state―go far towards the result―do much towards the result―make for some state
I rescued you.
I want you to help.
助けてくれ。
あなたを助けることができない。
I cannot help you.
Without your help
I want your help.
I want to be of help to you.