Once again he has broken faith with them.

他又一次对他们失信。

youdao

It is because the LORD is acting as the witness between you and the wife of your youth, because you have broken faith with her, though she is your partner, the wife of your marriage covenant.

因耶和华在你和你幼年所娶的妻中间作见证。她虽是你的配偶，又是你盟约的妻，你却以诡诈待她。

youdao

Once again he has broken his faith with them.

他又一次对他们不守信义。

《新英汉大辞典》

But promises made in good faith can be broken too.

ECONOMIST: Greed��and fear

Things were broken and that was evident, but my faith reminded me there was a God that came to fix the broken.

WHITEHOUSE: Community Development in the Classroom

Under Giuliani, Broken Windows started out as a good faith effort to reduce serious crime by going after petty crime.

FORBES: Rudy Giuliani Still Egregiously Wrong On Crime