You gave your word that you would protect me.

你发誓保护我的。

And he said, yeah, but you gave your word.

他说，是的，但你已经发誓了。

" To give your word" to someone means to make a promise to someone.

“To give your word” to someone 意味着向某人做出承诺。

" But you must give your word, " said Sandip Babu, " before we let you off" .

“但你必须保证，”Sandip Babu 说，“在我们放过你之前。”