If all Christians have today is a "so-called corrupted Bible," we are to be most pitied.
But "born again" Believers have much much more than the Book. We have Christ Himself,
to whom God willed to make known what is the riches of the glory of this mystery among the Gentiles, which is Christ in you, the hope of glory (Col 1:27).
To those who have experienced the glory of this mystery, no explanation is necessary.
To those who have not experienced the glory of this mystery, no explanation is possible.
Wise men still seek the One who declared He is the way, the TRUTH, and the giver of Eternal Life (John 14:6; 5:39-40).
Blessings