Romans 16:25 Now to him who is able to strengthen you according to my gospel and the preaching of Jesus Christ, according to the revelation of the mystery that was kept secret for long ages but has now been disclosed and through the prophetic writings has been made known to all nations, according to the command of the eternal God, to bring about the obedience of faith— to the only wise God be glory forevermore through Jesus Christ! Amen.
Amos 3:7 “For the Lord GOD does nothing without revealing his secret to his servants the prophets.
Matthew 13:17 For truly, I say to you, many prophets and righteous people longed to see what you see, and did not see it, and to hear what you hear, and did not hear it.
1 Peter 1:20 He was foreknown before the foundation of the world but was made manifest in the last times for the sake of you
Luke 10:23-24 Then turning to the disciples he said privately, “Blessed are the eyes that see what you see! For I tell you that many prophets and kings desired to see what you see, and did not see it, and to hear what you hear, and did not hear it.”
Ephesians 3:9 and to bring to light for everyone what is the plan of the mystery hidden for ages in God, who created all things,
Colossians 1:26 the mystery hidden for ages and generations but now revealed to his saints.
Once the mystery has been revealed, people will look at it in a host of different ways. Some will see it clearly and welcome the revelation with open arms. They see their sin, redemption through Christ, and firmly take hold of it by faith. Some take hold of it by faith because of what was written in the past about a coming messiah, the coming of Jesus Christ fulfilling these past prophecies, and assurance of eternity. The mystery was revealed and they believed. They believed in the grace, mercy, and love of God through Jesus Christ our redeemer.
There are those who have seen the mystery revealed and reject it. They mock, deny, and reject it as not a mystery but a fairy tale told by weak-minded people and believed by the simple-minded followers. They not only deny the revealed mystery but they deny God. Paul makes it very clear that God has revealed himself to everyone and that no man is without excuse. (Romans 1:18 “because what may be known of God is manifest in them, for God has shown it to them, For since the creation of the world His invisible attributes are clearly seen, being understood by the things that are made, even His eternal power and Godhead, so that they are without excuse, because, although they knew God, they did not glorify Him as God, nor were thankful, but became futile in their thoughts, and their foolish hearts were darkened. Professing to be wise, they became fools”)
Think about how gentiles were grafted into the redemption plan of God. This is truly a mystery. Prior to the rejection of Jesus Christ by the Jews, gentiles were, as it were, separated and without hope. They knew nothing about the prophetic writings from old but surely some of them heard of the God of the Jews. I wonder if this is the reason they came up with their own gods. The fact that God, in His wisdom, grace, mercy, and love, chose to reveal the mystery of the Gospel of Jesus Christ to gentiles, and continues to open their hearts and minds up to their sin and the need of redemption, and be able to clearly see not only Jesus Christ but the need for Him. This is truly the revealed mystery of grace, mercy, and love of God.