Reference for Isaiah 64:7

וְעַתָּ֥ה יְהוָ֖ה אָבִ֣ינוּ אָ֑תָּה אֲנַ֤חְנוּ הַחֹ֙מֶר֙ וְאַתָּ֣ה יֹצְרֵ֔נוּ וּמַעֲשֵׂ֥ה יָדְךָ֖ כֻּלָּֽנוּ׃

But now, O LORD, Thou art our Father; we are the clay, and Thou our potter, and we all are the work of Thy hand.

ספר השרשים