Use "steadfast" in a sentence

1. "The Lord is merciful and gracious, slow to anger and abounding in steadfast love...

"Le Seigneur est clément et miséricordieux, lent à la colère, abondant en grâce.

2. By remaining steadfast, parents so very often suffer and agonize more than the children they endeavor to teach.

En restant fermes, les parents souffrent et se tourmentent souvent plus que les enfants qu’ils s’efforcent d’éduquer.