1. The Appearance of Satan and the First and Second Beasts
The Bible prophesies that Satan would appear on earth twice. His first appearance was through the Catholic Church, and his second through the Church of God. The two beasts mentioned in Revelation 13 symbolize these churches. The first beast, rising from the sea, represents the Catholic Church, while the second beast, emerging from the earth, signifies the Church of God.

Revelation 13:1-2:
"I saw a beast coming out of the sea. It had ten horns and seven heads, with ten crowns on its horns, and on each head a blasphemous name."

Revelation 13:11-12:
"Then I saw a second beast, coming out of the earth. It had two horns like a lamb, but it spoke like a dragon. It exercised all the authority of the first beast on its behalf..."

The second beast is prophesied to create an idol for the first beast, symbolizing idol worship for Lucifer, the essence of Satan. Through this idol, people become subject to Satan's power and receive the mark of 666.

2. Lucifer and the Mark of 666
Lucifer, the archangel who ruled Babylon, is symbolized by the Catholic Church, which fulfills Babylonian prophecy. The mark of 666, mentioned in Revelation 13:15-17, is a key representation of Lucifer's authority and the Church of God under his dominion. This number signifies Satan's rule, and receiving it means submission to his power.

Revelation 13:15-17:
"The second beast was given power to give breath to the image of the first beast so that the image could speak and cause all who refused to worship the image to be killed. It also forced all people... to receive a mark on their right hands or on their foreheads."

The number 666 is not just a number but a symbol of Satan’s dominion. Within the Church of God, two idols, Ahn Sahng-Hong and Zahng Gil-Jah, are worshipped, and their names are metaphorically inscribed on the foreheads and hands of their followers.

3. 666 and Nebuchadnezzar’s Statue
The mark of Satan, 666, is closely connected to Nebuchadnezzar’s golden statue in Daniel 3. Nebuchadnezzar built a statue 60 cubits high and 6 cubits wide, demanding worship under penalty of death. The dimensions and the golden material link this statue to the mark of 666. The statue symbolizes Satan's dominion, with its size and golden nature reflecting the meaning of 666.

Daniel 3:1:
"King Nebuchadnezzar made an image of gold, sixty cubits high and six cubits wide, and set it up on the plain of Dura in the province of Babylon."

Additionally, the use of 600 talents of gold in Solomon’s temple, as recorded in 2 Chronicles 3:8, aligns with the meaning of 666. The gold used in the temple connects with Nebuchadnezzar’s statue, representing the authority and rule of Satan manifested in the mark of 666.

4. Kim Joo-Cheol and the Church of God
Kim Joo-Cheol, leader of the Church of God, established the worship of two idols, Ahn Sahng-Hong and Zahng Gil-Jah. This act fulfills the prophecies of Lucifer and Antiochus IV as manifestations of Satan’s power. Kim Joo-Cheol enforces the mark of 666 by compelling followers to worship these idols and partake in religious and commercial activities dictated by Satan’s dominion.

Revelation 13:17:
"So that no one could buy or sell unless they had the mark, which is the name of the beast or the number of its name."

5. The Meaning of 666
The number 666 is not a mere figure but a representation of Satan’s authority and dominion. It signifies the enforced worship of idols, specifically Ahn Sahng-Hong and Zahng Gil-Jah, within the Church of God. By distorting God’s word and compelling people to worship idols, those who receive the mark of 666 come under Satan’s rule, symbolizing his eternal dominion.

6. Conclusion: The Reality of Satan and 666
The reality of Satan is revealed through the Catholic Church and the Church of God, appearing twice to dominate through false doctrines and the mark of 666. This mark represents Satan’s authority and idol worship, aiming to distort God’s word and place people under Satan’s control.

Recognizing Satan’s reality and the mark of 666 is essential for spiritual victory. Upholding God’s truth and rejecting false worship is the path to triumph over Satan’s dominion.