Amashsai (Amashai in the King James Version) was a biblical character. The son of Azareel, he was appointed by Nehemiah to reside at Jerusalem and do the work of the temple. He merits only one mention in the whole Bible, in Nehemiah 11:13.
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This article incorporates text from a publication now in the public domain: Easton, Matthew George (1897). "Amashsai". Easton's Bible Dictionary (New and revised ed.). T. Nelson and Sons.