There are numerous problems with this claim, though:

• 1. There are only 22 letters in the Hebrew alphabet, exluding the various finals that make up 27 letters in total - where are the other 3? The answer is, they can't be stretched to fit the interlacing hexagram grid - see my article, 22 Letters or 28? The Lost Hebrew Alphabet;
• 2. The contemporary Hebrew block or 'square' alphabet is a relatively modern invention of the Pharisees and were not the letters used when Moses penned the Torah, David the Psalms, or the prophets their writings - these used a pictographic script known as Paleo-Hebrew which don't look anything like these later block character; and
• 3. The Seal of Solomon is in reality a pagan symbol known as the Star of Remphan or Moloch whose only inspiration is from the 'dark side' - see my article, Deadly Star: The Mystery of Solomon's Seal Revealed

In the illustration below you will see how the Divine Tetragrammaton (the Name of Yahweh) is viewed by them in anthropomorphic terms, the letters stacked one on top of the other to make the outline of their god-man, Adam Kadmon, which was absorbed into Mormonism by Joseph Smith who taught that Adam was the true god of mankind. In Brigham Young's time this was known as the 'Adam-God Doctrine' (since disavowed by the LDS Church):

Thus the originators or this post-Tanakh (Old Testament) script were heavily influenced by early anthroposophist pagan ideas teaching that man is in some way god (the meaning of the number 666 and a chief symbol of Satanism), a form of pantheism closely connected to the pagan hexagram that Solomon adopted in the days following his fall which led the nation of Israel to ruin.

As you will see in the diagram below, the original Hebrew pictographical alphabet (left-hand column) looks nothing like the modern block Hebrew (third column) or even one of the the many intermediary forms (second column). For a really interesting website that looks at this early Hebraic script, visit the Ancient Hebrew Research Center.