Maher-shalal-hash-baz

"Maher-shalal-hash-baz" was the second prophetic name mentioned in Isaiah chapter 8 –9.

Biblical accounts
The name is mentioned twice in the Hebrew Bible, both times in the Book of Isaiah chapter 8:

Isaiah 8:1
 * Moreover the said unto me, Take thee a great roll and write in it with a man's pen concerning Mahershalalhashbaz.

Isaiah 8:3
 * And I went unto the prophetess; and she conceived and bore a son. Then said the to me, Call his name Mahershalalhashbaz.

Analysis
The child Maher-shalal-hash-baz is the second prophetic-name child after the birth of Immanuel – traditionally understood as the son of Abi the bride of king Ahaz, i.e., the future king Hezekiah, by many Jewish commentators, or of another woman. The phrases maher-shalal and hash-baz are synonymous, both meaning approximately "quickly to the plunder". The name Maher-shalal-hash-baz is a reference to the impending plunder of Samaria and Damascus by the king of Assyria, Tiglath-Pileser III (734–732 BCE).

This is often counted the longest name (and word) used in the Bible, though a possible longer name-phrase in Isaiah is found in "called Pele-joez-el-gibbor-abi-ad-sar-shalom"

The section is also quoted in the Book of Mormon.