Modern scientists humbly admit that their knowledge of the mysteries of the universe is so limited that they can say they hardly know at all. Because what is hidden is thousands of times more than what has been revealed.

The author of the world famous children's literature "The Little Prince" used his inspiration as a poet to describe the facts of life. The author thinks “ that only by looking with the heart can one see clearly; the important things are invisible to the eye”. The little prince said that “the desert is beautiful because somewhere it conceals a well”. "Conceal" and "mystery" are two key words in the Bible and the concealed mysteries are the most fascinating. "The mystery of the kingdom of God has been granted to you. But to those outside everything comes in parables." ( Mark 4：11﹚

The Apostle Paul wrote in the letter to the Romans ( Romans 16：25-26） “that Jesus Christ was the mystery kept secret for long ages but now manifested.”

Knowing the kingdom of heaven is gradual, just like knowing parts of the Bible. The Bible describes the course of human history but does not mention the kingdom of heaven. To understand the kingdom of heaven one must read the whole Bible.

Even without counting the period of history from Abraham to the Revelation (from Genesis chapter 1 to 11), the Bible covers 4,000 years of human history. During this long period of human history, the major events are the threads of the entire history of salvation. "Kingdom of God" is one of the key words mentioned. Although it says "the kingdom of God", it is actually related to "people".

The "Kingdom of Heaven" written in the Bible was actually the "Kingdom of God". According to the Jewish tradition, the name of God could not be called upon and therefore they used the term "Kingdom of Heaven".

St. Matthew was a Jew who tried to avoid naming God so he wrote "Kingdom of Heaven" in his Gospel whereas St. Luke was not a Jew so he used "Kingdom of God" in his.