Reference for Eruvin 43:5

והיינו דא"ר יהושע בן לוי מאי דכתיב (דברים ז, יא) אשר אנכי מצוך היום לעשותם היום לעשותם ולא למחר לעשותם היום לעשותם למחר לקבל שכרם

And repayeth them that hate Him to His face, to destroy him.<span class="x" onmousemove="('comment',' Deut., VII, 10. E.V., And repayeth . . to their face, to destroy them.');">⁷</span> R'Joshua B'Levi remarked: Were it not for the written text one could not possibly have said it.

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