כִּ֤י עֶזְרָא֙ הֵכִ֣ין לְבָב֔וֹ לִדְר֛וֹשׁ אֶת־תּוֹרַ֥ת יְהוָ֖ה וְלַעֲשֹׂ֑ת וּלְלַמֵּ֥ד בְּיִשְׂרָאֵ֖ל חֹ֥ק וּמִשְׁפָּֽט׃ (ס)
Sebab Ezra telah mempersiapkan hatinya untuk menyelidiki Taurat Yang Mahakekal dan melakukannya, serta untuk mengajarkan ketetapan dan peraturan di antara orang Israel.
Rashi
For Ezra... Therefore, he went and prospered in his way, because Ezra prepared his heart, etc. He gives a reason for his words.