Who among you has a key? Who is keeping a secret?
I will give you the keys of the kingdom of heaven; whatever you bind on earth will be bound in heaven, and whatever you loose on earth will be loosed in heaven."
No man has the Keys, only Gods Appointed Messenger in each age, the 'Christ' can give the keys to True understanding. The keys to scriptures in this day, have been given by the Bab and Baha'u'llah;
Baha'u'llah has provided your answer;
"..O ye peoples of the world! Know assuredly that My commandments are the lamps of My loving providence among My servants, and the
keys of My mercy for My creatures. Thus hath it been sent down from the heaven of the Will of your Lord, the Lord of Revelation. Were any man to taste the sweetness of the words which the lips of the All-Merciful have willed to utter, he would, though the treasures of the earth be in his possession, renounce them one and all, that he might vindicate the truth of even one of His commandments, shining above the day spring of His bountiful care and loving-kindness...."
"..All praise be to the one true God -- exalted be His glory -- inasmuch as He hath, through the Pen of the Most High,
unlocked the doors of men's hearts. Every verse which this Pen hath revealed is a bright and shining portal that discloseth the glories of a saintly and pious life, of pure and stainless deeds. The summons and the message which We gave were never intended to reach or to benefit one land or one people only. Mankind in its entirety must firmly adhere to whatsoever hath been revealed and vouchsafed unto it. Then and only then will it attain unto true liberty. The whole earth is illuminated with the resplendent glory of God's Revelation. In the year sixty He Who heralded the light of Divine Guidance -- may all creation be a sacrifice unto Him -- arose to announce a fresh revelation of the Divine Spirit, and was followed, twenty years later, by Him through Whose coming the world was made the recipient of this promised glory, this wondrous favor. Behold how the generality of mankind hath been endued with the capacity to hearken unto God's most exalted Word -- the Word upon which must depend the gathering together and spiritual resurrection of all men...."
"..Unlock, O people, the gates of the hearts of men with the
keys of the remembrance of Him Who is the Remembrance of God and the Source of wisdom amongst you. He hath chosen out of the whole world the hearts of His servants, and made them each a seat for the revelation of His glory. Wherefore, sanctify them from every defilement, that the things for which they were created may be engraven upon them. This indeed is a token of God's bountiful favor....."
"..Announce unto yourselves the joyful tidings: "He Who is the Best-Beloved is come! He hath crowned Himself with the glory of God's Revelation, and hath
unlocked to the face of men the doors of His ancient Paradise." Let all eyes rejoice, and let every ear be gladdened, for now is the time to gaze on His beauty, now is the fit time to hearken to His voice. Proclaim unto every longing lover: "Behold, your Well-Beloved hath come among men!" and to the messengers of the Monarch of love impart the tidings: "Lo, the Adored One hath appeared arrayed in the fullness of His glory!" O lovers of His beauty! Turn the anguish of your separation from Him into the joy of an everlasting reunion, and let the sweetness of His presence dissolve the bitterness of your remoteness from His court..."
Baha'u'llah : Gleanings from the Writings of Baha'u'llah
Regards Tony