Another interpretation: "vayechulu" [were finished] is nothing other than a term of striking and destruction. This is like a king who entered a province and they praised him; he reduced their running about and increased their honors for them. So too there is a constellation that completes its course in twelve months, namely the sun, and so the planet Mercury; and there is one that takes twelve years, namely Jupiter; there is a constellation that takes thirty days, namely the moon; and there is one that takes thirty years, namely Saturn, except for the planet Venus and Mars, which complete their course in four hundred and thirty years. The white figs, their seventh-year cycle falls in the second year, for they bear fruit over three years, and on that day they made the fruit of their own day. But in the time to come the Holy One, blessed be He, will heal that wound, as it is said, "and He heals the wound of His blow" (Isaiah 30:26), the wound of the world. Rabbi Yehoshua said: The heavens were completed with the sun and moon and constellations, and the earth was completed with trees and grasses, and the Garden of Eden.
The Hosts of Heaven and Earth Completed in Their Courses
Yalkut Shimoni on Torah 16:14
דָּבָר אַחֵר, אֵין וַיְכֻלּוּ אֶלָּא לְשׁוֹן מַכָּה וּכְלָיָה לְמֶלֶךְ שֶׁנִּכְנַס לִמְדִינָה וְקִלְּסוּהוּ מִעוּט לָהֶם בְּרִיצָה וְהִרְבָּה לָהֶם בְּהַדְיוּכִין כָּךְ יֵשׁ מַזָּל שֶׁהוּא גּוֹמֵר הִלּוּכוֹ לִשְׁנֵים עָשָׂר חֹדֶשׁ, זֶה חַמָּה וְכֵן כּוֹכָב וְיֵשׁ לִשְׁתֵּים עֶשְׂרֵה שָׁנָה, וְהוּא צֶדֶק, יֵשׁ מַזָּל לִשְׁלֹשִׁים יוֹם, וְהוּא לְבָנָה, וְיֵשׁ לִשְׁלֹשִׁים שָׁנָה, וְהוּא שַׁבְּתַי, חוּץ מִכּוֹכַב נֹגַהּ וּמַאֲדִים שֶׁהֵן גּוֹמְרִים הִלּוּכָן לְאַרְבַּע מֵאוֹת וּשְׁלֹשִׁים שָׁנָה. בְּנוֹת שׁוּחַ שְׁבִיעִית שֶׁלָּהֶן בְּשָׁנָה שְׁנִיָּה שֶׁהֵן עוֹשׂוֹת לְשָׁלֹשׁ שָׁנִים וְאוֹתוֹ הַיּוֹם עָשׂוּ פֵּירוֹת שֶׁל יוֹמָן אֲבָל לֶעָתִיד לָבֹא הַקָּדוֹשׁ בָּרוּךְ הוּא מְרַפֵּא אוֹתָהּ מַכָּה שֶׁנֶּאֱמַר (ישעיה ל, כו) "וּמָחַץ מַכָּתוֹ יִרְפָּא", מַכָּתוֹ שֶׁל עוֹלָם. אָמַר רַבִּי יְהוֹשֻׁעַ, נִתְכַּלְּלוּ הַשָּׁמַיִם בַּחַמָּה וּלְבָנָה וּמַזָּלוֹת וְנִתְכַּלְּלָה הָאָרֶץ בְּאִילָנוֹת וּדְשָׁאִים, וְגַן עֵדֶן.