Symbol of early 17th-century mystic <a href="https://en.wikipedia.org/wiki/Jakob_B%C3%B6hme" class="extiw" title="en:Jakob Böhme">Jakob Böhme</a>, including the names "Christus", "Iesus" (Jesus), and "Immanuel" surrounding an inverted heart containing a <a href="https://en.wikipedia.org/wiki/Tetractys" class="extiw" title="w:Tetractys">Tetractys</a> of flaming Hebrew letters of the <a href="https://en.wikipedia.org/wiki/Tetragrammaton" class="extiw" title="w:Tetragrammaton">Tetragrammaton</a>, and at the bottom, the <a href="https://en.wikipedia.org/wiki/Pentagrammaton" class="extiw" title="en:Pentagrammaton">Pentagrammaton</a>.
Jakob Böhme
1730
<p>As reproduced in Manly P. Hall's 1928 book "The Secret Teachings of all Ages", from site <a rel="nofollow" class="external free" href="http://www.sacred-texts.com/eso/sta/sta17.htm">http://www.sacred-texts.com/eso/sta/sta17.htm</a>
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According to "The Alphabetic Labyrinth" by Johanna Drucker (<a href="//commons.wikimedia.org/wiki/Special:BookSources/0-500-28068-1" title="Special:BookSources/0-500-28068-1">ISBN 0-500-28068-1</a>), this Christian Kabbalistic diagram is from the 1730 <i>Libri Apologetici</i>.