"And God said, Let there be light." and, behold, Rabbi Yitzchak said, from here we learn that the Holy One, Blessed be He, uprooted these plantings and replanted them, as it is written 'Let there be' [implying a new creation from something that existed before].
(בראשית א׳:ג׳) וַיֹּאמֶר אֱלֹהִים יְהִי אוֹר, אָמַר רִבִּי יִצְחָק, מִכָּאן מַשְׁמַע, דַּעֲקָרָן קוּדְשָׁא בְּרִיךְ הוּא לְהַנֵּי נְטִיעָן, וְשָׁתֵיל לוֹן. דִּכְתִיב יְהִי.
"And God said, Let there be light." and, behold, Rabbi Yitzchak said, from here we learn that the Holy One, Blessed be He, uprooted these plantings and replanted them, as it is written 'Let there be' [implying a new creation from something that existed before].