כִּ֤י עֶזְרָא֙ הֵכִ֣ין לְבָב֔וֹ לִדְר֛וֹשׁ אֶת־תּוֹרַ֥ת יְהוָ֖ה וְלַעֲשֹׂ֑ת וּלְלַמֵּ֥ד בְּיִשְׂרָאֵ֖ל חֹ֥ק וּמִשְׁפָּֽט׃ (ס)
에스라가 여호와의 율법을 연구하여 준행하며 율례와 규례를 이스라엘에게 가르치기로 결심하였었더라
Rashi
For Ezra... Therefore, he went and prospered in his way, because Ezra prepared his heart, etc. He gives a reason for his words.