Midrash for Chullin 278:35

משה מן התורה מנין

Where is Esther indicated in the Torah? - [In the verse,] And I will surely hide [asthir] my face.<span class="x" onmousemove="('comment',' Deut. XXXI, 18. Heb. The second word is very like the name Esther, both in spelling and in sound. The verse in general foretells the many evils and troubles that shall befall Israel when they forsake the ways of God, and this was the case at the time of Esther, cf. Meg. 12a. rurs rn');">¹⁹</span>

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