A mystery is something that cannot be understood except by divine revelation or explanation. The mysteries of God are the truths about His purposes of creation and His Kingdom which are hidden from men until the time is due for them to be revealed by His grace.
It is a matter of grace for anyone to be given the eyes of understanding to know those things that had been concealed by God. This privilege is given only to the chosen servants of God Almighty whom He gives His spirit to understand any aspect of His plan. Moses stated: "The secret things belong unto the LORD our God: but those things which are revealed belong unto us and to our children for ever, that we may do all the words of this law." (Deuteronomy 29:29) "The meek will he guide in judgment: and the meek will he teach his way. The secret of the LORD is with them that fear him; and he will shew them his covenant." declared David the prophet in Psalm 25:9,14. Apostle Paul dwelling on this point stated: "For what man knoweth the things of a man, save the spirit of man which is in him? even so the things of God knoweth no man, but the Spirit of God." (1 Corinthians 2:11). Because it is the anointed servants, that God gives His spirit to understand His mysteries, Amos the prophet under inspiration stated: "Surely the Lord GOD will do nothing, but he revealeth his secret unto his servants the prophets". - Amos 3:7.
One of those who saw this declaration demonstrated practically was Nebuchadnezzar, king of Babylon. He had a dream which made such a deep impression on him that he was anxious to know its meaning. But strangely enough, he forgot the dream. He thereupon became restless in his demand that his advisers should remind him of the dream and then give him the interpretation. This was of course beyond the ability of any mortal. On hearing of the crisis in the court, Daniel, the prophet pleaded for time for him to pray to the "God in heaven that revealeth secrets" so that the dream and its interpretation would be revealed to him. His prayer was answered, and he, in gratitude exclaimed: "Blessed be the name of God for ever and ever: for wisdom and might are his. He revealeth the deep and secret things: he knoweth what is in the darkness, and the light dwelleth with him" - Daniel 2:28,20,22.
Daniel the Prophet went on to tell the king his dream about the great image, typifying the kingdoms that will rule the world at different times, starting from that of Babylon.The full fulfillment of the dream in regard to the setting up of God's Kingdom and the destruction of satan's organisation on earth are to take place in this age. - Daniel 2:25-45.
Apart from interpreting dreams, Daniel was also privileged to see visions of the signs of the last days, the destruction of the wicked and the salvation of the people of God, which will take place in the last days. But Daniel could not understand the meaning of all that he heard, and at a point had to inquire from the angel what the interpretation was, as it is written: "And I heard, but I understood not: then said I, O my Lord, what shall be the end of these things? And he said, Go thy way, Daniel: for the words are closed up and sealed till the time of the end." (Daniel 12:8,9) The text shows that the vision would remain a mystery until the meaning will be made bare at the time of the end.
On a certain occasion when he worshipped in the synagogue in Nazareth, Jesus Christ read from the prophecy in the book of Isaiah where it is written: "The Spirit of the Lord is upon me, because he hath anointed me to preach the gospel to the poor; he hath sent me to heal the brokenhearted, to preach deliverance to the captives, and recovering of sight to the blind, to set at liberty them that are bruised, To preach the acceptable year of the Lord." (Luke 4:18,19. See also Isaiah 61:1-3) The Bible says that our Saviour Jesus Christ preached the truth to the people to the end "that it might be fulfilled which was spoken by the Prophet, saying, … I will utter things which have been kept secret from the foundation of the world" - Matthew 13:35. See also Psalm 78:2.
In appreciation of the grace given him to expound the truth to the world, Jesus Christ himself declared, "…I thank thee, O Father, Lord of heaven and earth, because thou hast hid these things from the wise and prudent, and hast revealed them unto babes. Even so, Father: for so it seemed good in thy sight. All things are delivered unto me of my Father: and no man knoweth the Son, but the Father; neither knoweth any man the Father, save the Son, and he to whomsoever the Son will reveal him." - Matthew 11:25-27.
The narration of the vision continues in chapter three, verses one to three, where it is written: "Moreover he said unto me, Son of man, eat that thou findest; eat this roll, and go speak unto the house of Israel. So I opened my mouth, and he caused me to eat that roll. And he said unto me, Son of man, cause thy belly to eat, and fill thy bowels with this roll that I give thee. Then did I eat it; and it was in my mouth as honey for sweetness." - Ezekiel 3:1-3. See also chapter 3:10,11; Isaiah 51:16.
It could be seen therefore that by the power of the anointing, the servants of God are sanctified and enabled to understand the mysteries of God the dispensation of which gives immense pleasure and joy. There was a time during his days on earth that the apostles came to Jesus Christ and asked him why he spoke to the people in parables. He answered and said: "Because it is given unto you to know the mysteries of the kingdom of heaven, but to them it is not given". He added: "But blessed are your eyes, for they see: and your ears for they hear. For verily I say unto you, for many prophets and righteous men have desired to see those things which ye see and have not seen them, and to hear those things which ye hear and had not heard them". - Mathew 13:11,16,17.
To give them more insight into the mysteries of God, Jesus Christ assured his apostles that they would be given the holy spirit that would enable them to understand the truth and to dispense it to the world. He said: "But the Comforter, even the Holy Spirit, whom the Father will send in my name, he shall teach you all things, and bring to your remembrance all that I said unto you." "Howbeit when he, the Spirit of truth, is come, he shall guide you into all the truth". - John 14:26; John 16:13 American Standard Version. See also John 15:26, 27.
This promise to the apostles was fulfilled on the day of Pentecost when they received the anointing in the form of cloven tongues of fire. The Bible says that the people in the mixed audience who came to Jerusalem for the Pentecost festival were "all amazed and marvelled" to hear the apostles declare in their own languages "the wonderful works of God". See Acts 2:1-10.
By reason of their anointing the apostles are not taught by any man. Hence in 1 John 2:27 Apostle John states "But the anointing which ye receive of him abideth in you, and ye need not that any man teach you: but as the same anointing teacheth you of all things and is truth, and is no lie, and even as it hath taught you, ye shall abide in him".
Moreover, Apostle Paul stated: "But I certify you, brethren, that the gospel which was preached of me is not after man. For I neither received it of man, neither was I taught it, but by the revelation of Jesus Christ." (Galatians 1:11,12) Truly, those of the Apostles class are "stewards of the mysteries of God", "the mystery which hath been hid from ages and from generations, but now is made manifest to his saints". - 1 Corinthians 4:1; Colossians 1:26.
The fact that the apostles are taught by God is further illustrated in a vision which Apostle John, saw while on exile in the Island of Patmos. He was told to eat a book given to him by the angel, as it is written: "And the voice which I heard from heaven speak unto me again and said, Go and take the little book which is open in the hand of the angel which standeth upon the sea and upon the earth. And I went unto the angel, and said unto him, Give me the little book. And he said unto me, Take it, and eat it up; and it shall make thy belly bitter, but it shall be in thy mouth sweet as honey. And I took the little book out of the angel's hand, and ate it up; and it was in my mouth sweet as honey: and as soon as I had eaten it, my belly was bitter". - Revelation 10:8-10.
The eating of the scroll symbolize the empowerment of those of the apostles class with the Holy Spirit by virtue of which they are able to understand the scriptures and to dispense the truth with boldness, vigor and clarity. The scroll was bitter in his belly because of persecutions that will arise because of the word. Christ, the Revelator told John the apostle: "Fear not the things which thou art about to suffer: behold, the devil is about to cast some of you into prison, that ye may be tried; and ye shall have tribulation ten days. Be thou faithful unto death, and I will give thee the crown of life." - Revelation 2:10.
Furthermore, St. Paul in his letter to the Christians at Ephesus stated that God had made known to them (the apostles) the mystery of his will "according to his good pleasure which he had purposed in himself" (Ephesians 1:9) He spoke further in chapter 3 of how God by revelation made known to him hidden truths about His purposes by His grace. He stated: "For this cause I Paul, the prisoner of Jesus Christ for you Gentiles, If ye have heard of the dispensation of the grace of God which is given me to youward: How that by revelation he made known unto me the mystery; (as I wrote afore in few words, Whereby, when ye read, ye may understand my knowledge in the mystery of Christ) Which in other ages was not made known unto the sons of men, as it is now revealed unto his holy apostles and prophets by the Spirit;" - Ephesians 3:1-5.
He spoke further of the grace given him by God to dispense the truth. "Unto me, who am less than the least of all saints, is this grace given, that I should preach among the Gentiles the unsearchable riches of Christ; And to make all men see what is the fellowship of the mystery, which from the beginning of the world hath been hid in God, who created all things by Jesus Christ." - Ephesians 3:8-9.
The harp is a musical instrument, which in those days, had ten strings symbolizing the ten fundamental truths of the Holy Bible which are revealed to the saints. (Compare Psalm 49:4) The ten fundamental doctrines are: Creation, Justice Manifested, Abrahamic Promise, the birth of Christ, Ransom Sacrifice, Resurrection, Mystery Revealed, our Lord's return, Glorification of the Church and Restoration. That each of the 144,000 Christians had the "Father's name written in their foreheads" means that they have the accurate knowledge of God, the forehead being the seat of intelligence. The new song they were singing symbolizes the truth, which God will use the remnant, to be chosen in this age, to declare, the propagation of which is called the "strange work of God". - Isaiah 28:21. See also Matthew 24:14-16, 31.
Since the mysteries of God have been revealed, it behoves all lovers of truth and righteousness to identify with the truth and follow it until the end so that they will be saved in God's kingdom fully established by His grace.