The closed mem in the middle of a word
In the great birth prophecy of Isaiah — "For unto us a child is born, unto us a son is given" — the next verse opens with the phrase English Bibles render "Of the increase of his government and peace there shall be no end." The Hebrew word there, l'marbeh, is written with the closed, end-of-word form of mem sitting in the middle of the word. It is the only place in the entire Hebrew Bible where that happens. The Masoretes, the scribes who counted every letter, recorded the oddity and copied it forward rather than tidying it up. What they did not do is say why, and neither does the text. (English Bibles number this verse Isaiah 9:7; the Hebrew Bible numbers it 9:6.)
“For unto us a child is born, unto us a son is given, and the government will be upon His shoulders. And He will be called Wonderful Counselor, Mighty God, Everlasting Father, Prince of Peace.”
Isaiah 9:6 — unto us a child is born→
“Of the increase of His government and peace there will be no end. He will reign on the throne of David and over his kingdom, to establish and sustain it with justice and righteousness from that time and forevermore. The zeal of the LORD of Hosts will accomplish this.”
Isaiah 9:7 — of the increase of his government→