This Tetragram was designed by Eliphas Levi. It contains three different Tetragrammatons, TARO, INRI and יהוה.
The symbol that is made from the letters TARO is traditionally called a “Staurogram,” which contains a Tau-Rho, ⳨, with Alpha and Omega flanking. This is a traditional symbol for Jesus, and was first used as an abreviation of “σταυρός”, Stau (Tau) Ros (Rho), which means “Cross” in Greek. Jesus is also connected to the Alpha and Omega from Revelations 22:13:
“ἐγὼ τὸ Ἄλφα καὶ τὸ Ὦ, ὁ πρῶτος καὶ ὁ ἔσχατος, ἡ ἀρχὴ καὶ τὸ τέλος.”
“I am Alpha and Omega, the beginning and the end, the first and the last.”
This symbol is very similar to the Chi-Rho, ⳩ another abreviation for Jesus, being the first two letters of Christos, Χρίστος. This also traditionally flanked by Alpha and Omega, as seen on many churches throughout the ages, made popular by the Roman Emperor Saint Constantine I (r. 306–337), in his Vexillum. This symbol is actually older than Christianity as well, previously standing as an abreviation for the word ΧΡΗΣΤΌΝ, meaning “good” or “useful.” See SBDDN for more information. 
