what religion or belief or organization has a tetragrammaton star?

A tetragrammaton pentecal star with swords and eyes. I heard its high magick, but I'm wondering which religion or if an organiztion like masons use it. I have a friend that says, he remembers that his parents would go to meetings when he was a kid, where a man with a sword stood guarding the door. And his folks have the star tetragrammaton with the name of G-D in hebrew in their house. When I saw it, it kinda angered me that they would have his sacred hebrew name. My friend didn't even know it was hebrew or what it said. Any info on it with detail would be helpful. Please show references, books I can read. Thanks