The   oldest   handwriting   with   the   complete   text   of   the   Hebrew   Bible   (better   known   as   the   Old   Testament)   is   preserved   in   the Russian   National   Library   of   Saint   Petersburg.   It   is   dated   between   1008/1009.   It   is   known   as   the   codex   Leningradensis, named after the city of Leningrad (formerly called Saint Petersburg). The   Codex   was   written   by   Jews   living   at   the   time   in   the   Egyptian   city   of   Cairo.   They   were   men   who   specialized   in   accurately copying   texts,   handwritten   very   clearly   and   very   uniformly.   They   were   presumably   trained   in   the   school   of   Moses   Ben   Asher, a well-known copyist from that time. This old handwriting is very valuable because of its well preserved condition. The    German    scholar    Rudolf    Kittel    used    the    Codex    as    the    main    source    for    his    highly    regarded    publication,    the    Biblia Hebraica,    published    in    1937.    His    colleague    Prof.    Paul    Kahle    continued    the    work    of    Kittel,    which    led    to    an    improved translation released as the Biblia Hebraica Stuttgartensia. “A beautifully illustrated page from the Codex" An   expert   in   the   field   of   Hebrew   manuscripts   brought   to   our   attention   that   the   beautifully   decorated   picture   with   the   star   of David,   which   is   shown   below,   is   called   a   “Masoretic   carpet”.   We   show   a   carpet   filling   an   entire   page.   In   the   Codex   there   are approximately   15   such   images.   These   are   pages   with   beautiful   drawings   typical   of   the   Jewish   art   from   the   middle   ages.   In addition,   they   contain   a   religious   message.   For   example,   we   can   find   the   Bible   texts   of   Deuteronomy   12:1;   26:   15;   27:   10; 28: 2, 12-13 and also quotes from the Book of Psalms 60: 10; 63: 1, 4; 68:20, 28a. The copyist indentifies himself in the centre of the star of David as Samuel, the son of Jacob.  
photo: public domain - see  Wikimedia Commons
"A page with text" God’s   name   found   in   many   places   in   this   ancient   handwritten   text,   in   the   form   of   the   Tetragrammaton.   The   first   frame   shows the   Tetragrammaton   at   Genesis   28:   20.   The   second   frame   does   not   show   the   Tetragrammaton   –   this   is   a   grammatical conjugation of the verb "to be", It is the text from Gen. 28: 22.  
photo: public domain - see Wikimedia Commons
In the text itself:
photo: public domain - see Wikimedia Commons