Answer: Some make the mistake of thinking that the Kingdom of God is here now because Christians have the Holy Spirit after repentance, baptism and laying on of hands. All of those are vital for Christians today, but the Kingdom of God is something else—something wonderful and yet future.
Jesus told us plainly that the Kingdom of God would be established on this earth as a literal Kingdom, upon His Second Coming, when He returns to the earth in power and great glory. We read:
“And there will be signs in the sun, in the moon, and in the stars; and on the earth distress of nations, with perplexity, the sea and the waves roaring; men's hearts failing them from fear and the expectation of those things which are coming on the earth, for the powers of heaven will be shaken. Then they will see the Son of Man coming in a cloud with power and great glory. Now when these things begin to happen, look up and lift up your heads, because your redemption draws near” (Luke 21:25-28).
The most common prayer in professing Christendom acknowledges that God’s Kingdom is not here yet and that Christians are to fervently pray for its arrival! Matthew 6:9-10: “Our Father in heaven, hallowed be Your name. Your kingdom come . . .”
What is a kingdom? A kingdom has a king. It has a territory. It has laws. And it has subjects. Christ will come as King of His Kingdom. Its territory will expand to fill the earth. Its laws will be God’s laws. And its subjects will be the people under Christ’s loving and benevolent rule during the Millennium.
So, whatever you want to call the wonderful foretastes Christians now have of that Kingdom, it would be a big mistake to confuse those with the actual Kingdom of God that Christ will soon be coming to establish.