Since the way was not long, why did they delay three days? Rather, because they did not listen to Satan, he went and turned himself into a great river before them, so that they could not cross. Abraham said, "If the lads go down, I am afraid they may drown." He went down, and the water rose up to their necks. Abraham lifted his eyes to the heavens and said, "Master of the worlds, You revealed Yourself to me and said to me, 'I am unique and you are unique; make My name known throughout all the world, and offer up your son as a burnt offering.' I did not question Your words, and I did not delay Your commands. And now the waters have come up to the soul. If Isaac my son drowns, how will Your name be made one?" Immediately the Holy One, blessed be He, rebuked Satan, and he went away.
Satan Turns to a River to Block the Road to Moriah
Yalkut Shimoni on Torah 99:5
וְכִי מֵאַחַר שֶׁאֵין דֶּרֶךְ מְרֻבָּה לָמָה נִתְעַכֵּב שְׁלֹשָׁה יָמִים, אֶלָּא כֵּיוָן שֶׁלֹּא שָׁמְעוּ לַשָּׂטָן, הָלַךְ וְנַעֲשָׂה לִפְנֵיהֶם כְּנָהָר גָּדוֹל שֶׁלֹּא יוּכְלוּ לַעֲבֹר. אָמַר אַבְרָהָם, אִם יוֹרְדִים הַנְּעָרִים מִתְיָרֵא אֲנִי שֶׁמָּא יִטְבְּעוּ. יָרַד עָמְדוּ לָהֶם הַמַּיִם עַד צַוָּארֵיהֶם. תָּלָה אַבְרָהָם אֶת עֵינָיו לַשָּׁמַיִם, אָמַר, רִבּוֹן הָעוֹלָמִים, נִגְלֵיתָ עָלַי וְאָמַרְתָּ לִי אֲנִי יָחִיד וְאַתָּה יָחִיד הוֹדַע שְׁמִי בְּכָל הָעוֹלָם וְהַעֲלֵה בִּנְךָ לְעוֹלָה, וְלֹא הִרְהַרְתִּי אַחַר דְּבָרֶיךָ וְלֹא עִכַּבְתִּי מַאֲמָרֶיךָ, וְעַכְשָׁיו בָּאוּ מַיִם עַד נָפֶשׁ, אִם טוֹבֵעַ יִצְחָק בְּנִי הֵיאַךְ יִתְיַחֵד שִׁמְךָ, מִיַּד גָּעַר הַקָּדוֹשׁ בָּרוּךְ הוּא בַּשָּׂטָן וְהָלַךְ לוֹ.