Jehovah's Witnesses claim thaqt the preaching work they do fulfills the prophetic words of Jesus Christ recorded in Matthew 24:14. There we find that Christ said that, "This good news of the kingdom will be preached to the whole world as a testimony to all the nations." Jehovah's Witnesses also tell us that, "Christ and his apostles preached the good news of the kingdom." And they assure us, "We preach the good news of the kingdom." The problem is that simply attaching the same title to their message does not mean the message preached by Jehovah's Witnesses is the same message that was preached by the apostles.
"The good news of the kingdom" preached by Jehovah's Witnesses is that "the kingdom of God" is a heavenly government that was set up in the year 1914 AD, and that this heavenly government will soon bring paradise conditions to the earth.
Now, I ask you, is this really the message that the apostles preached? Was this their "good news of the kingdom"? Did they spend their time telling people about an invisible heavenly government that would be set up in the year 1914 and would shortly thereafter bring paradise conditions to the earth?
The Bible contains no record of them having preached such a message. It tells us what the message was that the apostles preached. As the apostle Paul said, "We preach Christ crucified." In fact, Paul said that in his ministry he had "resolved to know nothing" "except Jesus Christ and him crucified." (1 Cor. 1:23, 2:2) The apostles spent all their time telling people about Jesus Christ and what He had done for them. The "good news" they preached was that if people would only believe in their hearts that Jesus Christ's sacrificial death was a sufficient payment for all their sins, God would forgive them completely for all of their unrighteousness, and He would then give them the gift of eternal life.
This is the "good news" which the apostles preached. And since it is the only "good news" they preached, it must be the "good news of the kingdom" which Jesus said would be preached "in all the inhabited earth, for a witness to all the nations." (Matt. 24:14)
But how can the good news of God's forgiveness which He grants us because of Jesus Christ's sacrificial death be the "good news of the kingdom"? After all, this message says nothing about any kind of government. And isn't a kingdom a government?
To answer these questions we must understand what "God's kingdom" is. Though Jehovah's Witnesses are fond of repeating the words, "A kingdom is a government," that is not a completely accurate statement. At least not according to the dictionary's definition of a "kingdom." Dictionaries tell us that a "kingdom" is "a political or territorial unit that is ruled by a king or a queen." (The American Heritage Dictionary) Now, the government which rules a kingdom is certainly a part of the kingdom, but only a part. It is not the kingdom.
When Herod Antipas told the daughter of Herodias, "Whatever you ask I will give you, up to half my kingdom," was he offering to split his governmental authority with her, to make her his coregent? No, he was not. He was offering to give her a part of what he and his government owned and ruled over. To him his kingdom was everything belonging to and controlled by him and his government.(Mark 6:23)
Clearly, the word "kingdom," as used today and in the Bible, primarily refers to a domain over which a king rules. With this in mind, what do the words "the kingdom of God," as used by Jesus and his apostles, refer to? What is the domain over which Jesus Christ now rules? Jesus Christ now rules over all those who have submitted themselves to His rulership by accepting Him as their Lord. The domain over which Jesus Christ now rules is His entire body of believers worldwide, also known as His Church.
This is the only definition that fully fits the way the term is used in the Bible. Consider, for instance, Revelation 5: 9,10. There we read, referring to Jesus Christ, "With your blood you purchased men for God from every tribe and language and people and nation. And you have made THEM to be a kingdom." Another passage I find quite helpful here is Matthew 13:47-50. There we find that Christ compared "the kingdom of God," which Matthew called "the kingdom of heaven," to a fishnet which would end up catching both "good fish" and "bad fish." This is, of course, exactly what happened when Christ's Church, which He established with the help of His apostles, was tossed into the sea of mankind.
Like any kingdom, the kingdom of God, Christ's Church, is made up primarily of the realm over which its king rules. In this case, Christians. And like any kingdom, the kingdom of God, Christ's Church, has its king dwelling within it. In this case, Jesus Christ.(Colossians 1:27)
Since the kingdom of God is Christ's Church, and since Christians themselves are the only visible and audible components of Christ's Church, the "good news of the kingdom" must be the good news that is preached by Christians. The word "of," here used as part of the phrase "the good news of the kingdom," does not mean "about" the kingdom. Rather, it is here used to refer to the good news belonging to the kingdom and coming from the kingdom. Just as, "the seat of Moses" belonged to Moses (Mt. 23:1 NWT), and "Jesus of Nazareth" came from Nazareth (Mt. 26:71). Today that good news is the same good news that the apostles preached nearly 2,000 years ago. And it is the same good news that has been preached by Christians ever since.
As I mentioned earlier, that "good news" is simply this. If we will only believe in our hearts that Jesus Christ's sacrificial death paid the full price for all of our sins, God will completely forgive us for all of our unrighteousness, and He will give us the gift of eternal life.
This is the good news of the kingdom of God. This is the good news preached by Christians. It is not, however, the good news preached by Jehovah's Witnesses. For, unlike the "good news" of Jehovah's Witnesses, the good news preached by the apostles and by all other Christians for nearly 2,000 years says nothing about an invisible government established in heaven in the year 1914 AD. It also says nothing about how this government will direct the efforts of millions of mortal believers as they work hard to bring paradise conditions to the earth and themselves to a state of human perfection. And it says nothing about how the only ones who will initially be allowed to live in this "paradise" will be people who totally submit themselves to the spiritual authority of a small group of men who run a publishing empire called the Watchtower, Bible and Tract Society.
Clearly, Jehovah's Witnesses preach a "good news" different from the good news preached by the apostles. And because they do we must reject their message. Why? Because in Galatians 1:8, 9 the apostle Paul wrote that anyone who preaches a "good news" different from the "good news" which the apostles themselves preached will be eternally condemned.