Those in the kingdom of God are BORN OF GOD. Jesus said John the Baptist was the greatest man that ever lived up to that point. But because of our spiritual rebirth the least of us are greater than he. "Your new self has been born in God's likeness, truly righteous and truly holy" (Ephesians 4:24).
John the Baptist was "filled with the Spirit from the womb" (Luke 1:15). But we are better than filled because He & we are ONE. "We who have joined ourselves to the Lord are one spirit with Him" (1 Corinthians 6:17).
Christ is a body, Jesus is the head of that body, those who trust Him are the rest of that body. Just as my hand is me and a part of me so too are we parts of the body of Christ and we are Christ (1 Corinthians 12:12). We are "one body and one Spirit" with God (Ephesians 4:4).
We are Greater than the Greatest! We are One with Him!