His luck changed for the better/ fortune smiled on him
In the question: He became famous and great. Or: His personality was revealed...
("Until the sun of Eli went down, the sun of Samuel the Aramite shone" - Yoma 38:2, and so on: "And from the day that the sun of the rabbis set, the sun of books shone, and writers and scholars were engaged in being speakers for generations" - Berdichevski/Katavim, 2, 81)
Translation
Expression (Hebrew)
זָרְחָה שִׁמְשׁוֹ שֶׁל...
Definition (Hebrew)
בְּהַשְׁאָלָה: הִתְפַּרְסֵם וְהִתְגַּדֵּל. אוֹ: הוֹפִיעָה אִישִׁיּוּתוֹ שֶׁל...
("עַד שֶׁלֹּא כָּבְתָה שִׁמְשׁוֹ שֶׁל עֵלִי,זָרְחָה שִׁמְשׁוֹ שֶׁל שְׁמוּאֵל הָרָמָתִי"-יוֹמָא לַח ע"ב, וְכֵן:"וּמִיּוֹם אֲשֶׁר שָׁקְעָה שֶׁמִּשָּׁם שֶׁל הָרַבָּנִים,זָרְחָה שֶׁמֶשׁ הַסִּפְרוּת, וְסוֹפְרִים וְיִדְּעוֹנִים הִתְנַשְּׂאוּ לִהְיוֹת דַּבְּרָנִים לְדוֹר"-בֶּרְדִּיצֶ'בְסְקִי/ כְּתָבִים, ב, 81)