Today the Holy Spirit is the ONLY One who reveals God’s spiritual secrets (mysteries), including the “key of knowledge” or the true method of understanding God’s deeper Divine Truths about how believing humans enter into the Kingdom of Heaven! Basically, they first must be born again—they must become spiritually alive, before they can know the Truth that sets them free!
We are God’s children living in a heavenly settlement on this Earth—the Body of Christ, also called the CHURCH.
Contrary to popular opinion, the Ten Virgins’ parable is not about Israel being grafted back onto the Olive Tree just in time to rule with Christ during His millennial reign. The Ten Virgins’ parable is about all believers (Jews and Gentiles) who live and die on Earth during the CHURCH Age (cf. Matthew 25:1-13).
The way we obtain the Keys of the Kingdom (spiritual wisdom, knowledge, and understanding) is through the Holy Spirit, who is ONE with Christ and ONE with God.
Jesus the Christ deserves to be worshipped in Spirit and in Truth by His Kingdom of God on Earth citizens, and true believers’ worship means that they must express their reverence of, respect/admiration for, and devotion to Jesus the Christ with EVERYTHING that is in them, which is the whole essence of the Kingdom of God.
Unfortunately, because too many “churchy” people tend to think that regeneration (the rebirth) and salvation are the same, that water baptism is the second birth, that water baptism saves, or that people have something to do with their own rebirth, we have too many professed Christians in our modern-day churches who really have never been born again—people who never have received a regenerated spirit.