You want to use a modern dictionary to correct Jerome's own fluency in the Latin tongue?
It's not about the age of dictionaries, it's about linguistics,
which common roots are still evident in the words
musterion,
mysterium,
mystery.
You've got a long way to go before you have
demonstrated that the Greek
musterion translates
sacramentum instead of
mysterium in the Latin.
And then you have a long way to go before you have Biblically demonstrated that "sacraments" are anywhere presented in the NT as mysteries.
This is like correcting your English on the basis of what some future dictionary of English might look like--that's an absurd proposition.
When Jerome chose sacramentum to translate mysterion he did so because these two words were understood to mean the same thing. Latin speaking Christians used sacramentum where Greek speaking Christians used mysterion, and at the same time Syriac speaking Christians used 'eraza to mean the same.
This is why the word "sacrament" gets used to refer to more than just "the Sacraments" (whether a church counts 2, 3, or 7, or more). Jesus Christ is Himself called the chief Sacrament.
Where do you find Christ presented as "sacrament" in Christian doctrine. . .or the NT?
Sacraments are a rite, not an appellation.
The word "sacrament" refers to sacred mystery, with "mystery" having the meaning of a thing revealed or brought to light. Specifically "sacrament", or the idea of the sacramental, being that God acts and works through means.
That action is not a
former secret newly revealed. . .that is seen throughout the OT, e.g., circumcision, animal sacrifices, cleansing rites.
The Bible itself is sacramental, for the Scriptures are the means through which God has given us His word,
That is some serious morphing of theology by grammatical misapplication,
the meaning of the Greek
musterion (new revelation) morphed to
the meaning of the Latin
sacramentum (God acts through means), now presented as meaning the same thing.
written by human authors but divinely inspired by the Holy Spirit, and therefore the Scriptures are properly called the word of God rather than the words of men.
The Incarnation is the Sacrament of Sacraments, the very Revelation of God and means of our salvation. It is the Mystery of Mysteries, the central and sacred truth. God became man.
Only by change of the Biblical meaning of
musterion from "new revelation" to "God acting through means" (
sacramentum).
The language of sacrament is as biblical as the language of Trinity.
Au contraire. . .
Only by
morphing what is
not presented in Scripture (
musterion--from "new revelation," to
sacramentum--"God acts through means")
while Trinity
is presented in Scripture, where the NT shows
1) three separate agents, Father, Son and Holy Spirit, in the work of salvation and atonement:
----a) at its beginning (
Lk 1:35) in the inauguration of Jesus' public ministry (
Mt 3:16-17),
----b) in its completion (
Ac 2:38-39, Ro 8:26,
1 Co 12:4-13,
Eph 1:3-14,
Eph 2:13-22,
2 Th 2:13,
1 Pe 1:2);
----c) the only way to enter the kingdom of the Father (
Jn 3:1-15),
----d) atonement (
Heb 9:14);
2) Father, Son and Holy Spirit bracketed together as the triune name of God (
Mt 28:19,
1 Co 12:4-6,
2 Co13:14,
Rev 1:4-5);
3) the following set of relationships:
----a) Son is subject to the Father, being
sent by the Father in the Father's name (
Jn 5:23, 36, 43),
----b) Spirit is subject to the Father, being
sent by the Father in the Son's name (
Jn 14:26),
----c) Spirit is subject to the Son as well as the Father, being
sent by the Son as well as the Father (
Jn 15:26, 16:7, 14:26).
Sacramentum enjoys
no such
Biblical evidence in support of it, it is all
human assertion and morphing.
There is no reason for ever understanding it to mean anything other than "secret, never before revealed" as presented therein.