We (you and I) also know they were not always consistent in their application of the three-fold principle in those two passages, there, in Acts 17:11,12.
As for the yes and no; it depends.
In the end, THE Mystery (being THE Very CAPSTONE of Divine Revelation that it is) is meant to function sort of like a Schematic or Template through which one is able to see what goes where anywhere in Scripture.
In that sense, THE Mystery is a one size fits all.
Genesis thru Revelation viewed through the lens of Romans thru Philemon.
So, there is that.
But along with that are the things that differ between Prophecy and Mystery that said Schematic is meant to also allow the seeing of.
Ephesians 1:9 Having made known unto us the mystery of his will, according to his good pleasure which he hath purposed in himself: 1:10 That in the dispensation of the fulness of times he might gather together in one all things in Christ, both which are in heaven, and which are on earth; even in him:
Ephesians 3:15 Of whom the whole family in heaven and earth is named,
Rom. 5:8
Hi and then THE LAW OF MOSES is a " one fits all " AND the MYSTERY is also a " ONE FITS ALL " phrase also ?
Are we in agreement here ??
dan p