Mr 4:11
And He was saying to them, "To you has been given the mystery of the kingdom of God, but those who are outside get everything in parables,
Ro 11:25
For I do not want you, brethren, to be uninformed of this mystery--so that you will not be wise in your own estimation--that a partial hardening has happened to Israel until the fullness of the Gentiles has come in;
Ro 16:25
Now to Him who is able to establish you according to my gospel and the preaching of Jesus Christ, according to the revelation of the mystery which has been kept secret for long ages past,
1Co 2:7
but we speak God's wisdom in a mystery, the hidden wisdom which God predestined before the ages to our glory;
Eph 1:7-9
In Christ we have redemption through His blood, the forgiveness of our trespasses, according to the riches of His grace 8 which He lavished on us. In all wisdom and insight He made known to us the mystery of His will, according to His kind intention which He purposed in Him.
Eph 3:3-4
that by revelation there was made known to me the mystery, as I wrote before in brief. By referring to this, when you read you can understand my insight into the mystery of Christ
Eph 3:9
and to bring to light what is the administration of the mystery which for ages has been hidden in God who created all things;
Eph 5:32
This mystery is great; but I am speaking with reference to Christ and the church.
Eph 6:19
and pray on my behalf, that utterance may be given to me in the opening of my mouth, to make known with boldness the mystery of the gospel,
Col 1:26
that is, the mystery which has been hidden from the past ages and generations, but has now been manifested to His saints,
Col 1:27
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 2:2
that their hearts may be encouraged, having been knit together in love, and attaining to all the wealth that comes from the full assurance of understanding, resulting in a true knowledge of God's mystery, that is, Christ Himself,
Col 4:3
praying at the same time for us as well, that God will open up to us a door for the word, so that we may speak forth the mystery of Christ, for which I have also been imprisoned;
1Ti 3:9
but holding to the mystery of the faith with a clear conscience.
1Ti 3:16
By common confession, great is the mystery of godliness: He who was revealed in the flesh, Was vindicated in the Spirit, Seen by angels, Proclaimed among the nations, Believed on in the world, Taken up in glory.
This "mystery" of godliness (Father, Son and Holy Spirit) cannot be received or understood unless/until one is "born of the Spirit" as Jesus declared in John 3:5-7,
Jesus answered, "Truly, truly, I say to you, unless one is born of water and the Spirit he cannot enter into the kingdom of God. That which is born of the flesh is flesh, and that which is born of the Spirit is spirit. Do not be amazed that I said to you, `You must be born again.'