〜ばこそ
Usage
「-ということがまさに理由で」precisely because ~; exactly because ~ (strong emphasis on the reason)
Examples
愛してればこそ、別れる決心をした
It is precisely because I love you that I decided to break up.
生徒たちのことを思えばこそ、こうして厳しく言うのです
It is precisely because I care about the students that I speak this strictly.