The hidden hand sign is used in York Rite Masonry’s 7th degree, the Royal Arch Degree. The Grand Master of the Second Veil, or Junior Overseer is one of nine officials necessary to form a Royal Arch Chapter. During the Royal Arch initiation ceremony, he is responsible for teaching new initiatives the meaning of the hidden hand sign:

Master of Second Veil: Three Most Excellent Masters you Must have been, or thus far you could not have come; but farther you cannot go without my words, sign, and word of exhortation. My words are Shem, Japhet, and Adoniram; my sign is this: (thrusting his hand in his bosom); it is in imitation of one given by God to Moses, when He commanded him to thrust his hand into his bosom, and, taking it out, it became as leprous as snow. My word of exhortation is explanatory of this sign, and is found in the writings of Moses, viz., fourth chapter of Exodus.”

~ Royal Arch initiation ritual

The Master of Second Veil goes on to quote Exodus 4:6:

“And the Lord said furthermore unto him, Put now thine hand into thy bosom. And he put his hand into his bosom: and when he took it out, behold, his hand was leprous as snow.”

~ Exodus 4:6, KJV

Illuminati symbols and signs researcher Texe Marrs was inspired by the sign above when he titled the fourth chapter of his Codex Magica: Secret Signs, Mysterious Symbols, and Hidden Codes of the Illuminati, the Hidden Hand of the Men of Jahbuhlun. Marrs writes that in the first three degrees known as the Blue Lodge, Freemasons learn that the name of God has been lost and learn a substitute name, MAHABONE.

Royal arch Masons learn that the name has not been lost after all and that the Masonic god is named JAH-BUL-ON, or YAH-BAAL-ON with each syllable representing one of their god’s three identities: Yahweh, Baal, and Osiris.

Marrs further explains that the Freemasons do not wish for the general public to know the name of their god, and that “the name and identity of the hidden god must be concealed at all costs, and thus an appropriate hand sign has been devised to represent this grotesques coverup: the Sign of the Hidden Hand.” (p. 57)

Marrs is well aware of the Masonic explanation for the sign given in Duncan’s Monitor and writes: “Leprous, indeed, is the hand of the Mason who vainly seeks to hide or coverup his fides oath of allegiance to Jahbuhlun, his secret god, But, believe me, there is no relationship of the Mason to Moses, a prophet of God, who loyally worshipped the true I AM, the God who reigns for all eternity in heaven.” (p. 58)