Hello again, @Big Moose,
This is a precious subject with may facets, and one which I am a little fearful of entering upon in a forum situation, for it is a subject to be pondered, and treated with great care.
* As we know, there is more than one 'mystery' referred to in Scripture, you yourself having quoted three:-
'The Mystery of Christ': (Eph. 3:4) was made known in other generations, and was not made known exclusively to Paul, but was made known to the apostles and prophets, including Paul.
'The Mystery': (Eph.3:3,9) which was 'hid in God', therefore not the subject of Old Testament prophecy, the gospel records or the epistles written prior to it's revelation to Paul while in prison at Rome; and revealed subsequently by him, in the epistles to Ephesians, Philippians, Colossians, 1 & 2 Timothy and Titus, (Philemon being of a more personal nature).
Romans 16:25, 26, as part of the doxology relating to the central portion of Romans (5:12-8:39): refers to the mystery revealed within that portion: which had been 'kept secret' since the world began; and not before the world began (Titus 1:2; 2 Tim. 1:9). It is the purpose of the central section of Romans to reveal the relationship of man, as such (ie., as neither Jew nor Gentile), to Adam and to Christ, irrespective both of promises made to the fathers, or to the failure or success of the chosen nation.
(Gr. musterion G3466):-
- In the gospels: Matt. 13:11, Mark 4:11, Luke 8:10.
- In the pre-prison epistles of Paul: Rom. 11:25; 16:25; 1 Cor. 2:7; 4:1; 13:2; 14:2; 15:51; 2 Thess. 2:7.
- Prison epistles: Eph. 1:9; 3:3,4; 5:32; 6:19; Col. 1:26,27; 2:2; 4:3.
- Interim epistles: 1 Tim. 3:9,16.
- Revelation: 1:20; 10:7; 17:5,7.
- Old Testament (secret/s) Dan. 2:18, 19, 27, 29, 30, 47 (2), 4:6.
In Christ Jesus
Chris
And also the CHURCH was a mystery.