Hebrews 7:12

For the priesthood being changed, there is made of necessity a change also of the law.
Word Reference
Original Word Definitions
μετατιθεμένης
G3346 V-PPP-GSF
metatithēmi
to transfer, i.e., (literally) transport, (by implication) exchange, (reflexively) change sides, or (figuratively) pervert
  • to transpose (two things, one of which is put in place of the other)
    • to transfer
    • "to change"to transfer one's self or suffer one's self to be transferred
      • to go or pass over
      • "to fall away or desert from one person or thing to another
γὰρ
G1063 CONJ
gar
properly, assigning a reason (used in argument, explanation or intensification; often with other particles)
  • for
τῆς
G3588 T-GSF
ho
the (sometimes to be supplied, at others omitted, in English idiom)
  • this, that, these, etc. Only significant renderings other than ___%___the___%___ counted
ἱερωσύνης
G2420 N-GSF
hierōsynē
sacredness, i.e., (by implication) the priestly office
  • priesthood, the priestly office
ἐξ
G1537 PREP
ek
a primary preposition denoting origin (the point whence action or motion proceeds), from, out (of place, time, or cause literal or figurative; direct or remote)
  • out of, from, by, away from
ἀνάγκης
G318 N-GSF
anankē
constraint (literally or figuratively); by implication, distress
  • necessity, imposed either by the circumstances, or by law of duty regarding to one's advantage, custom, argument
  • "calamity, distress, straits
καὶ
G2532 CONJ
kai
and, also, even, so then, too, etc.; often used in connection (or composition) with other particles or small words
  • and, also, even, indeed, but
νόμου
G3551 N-GSM
nomos
law (through the idea of prescriptive usage), genitive case (regulation), specially, (of Moses (including the volume); also of the Gospel), or figuratively (a principle)
  • anything established, anything received by usage, a custom, a law, a command
    • of any law whatsoever
      • a law or rule producing a state approved of God
        • by the observance of which is approved of God
        a precept or injunction"the rule of action prescribed by reason
      of the Mosaic law, and referring, according to the context, either to the volume of the law or to its contents"the Christian religion: the law demanding faith, the moral instruction given by Christ, especially the precept concerning love"the name of the more important part (the Pentateuch), is put for the entire collection of the sacred books of the Old Testament
μετάθεσις
G3331 N-NSF
metathesis
transposition, i.e., transferral (to heaven), disestablishment (of a law)
  • transfer: from one place to another
  • "to change
    • of things instituted or established
γίνεται
G1096 V-PNI-3S
ginomai
to cause to be (___%___gen___%___-erate), i.e., (reflexively) to become (come into being), used with great latitude (literal, figurative, intensive, etc.)
  • to become, i.e., to come into existence, begin to be, receive being
  • "to become, i.e., to come to pass, happen
    • of events
    to arise, appear in history, come upon the stage
    • of men appearing in public
    to be made, finished
    • of miracles, to be performed, wrought
    to become, be made

μετατιθεμένης γὰρ τῆς ἱερωσύνης ἐξ ἀνάγκης καὶ νόμου μετάθεσις γίνεται
12
For the priesthood being changed, there is made of necessity a change also of the law.
Cross References

Jeremiah 31:31

הִנֵּה יָמִים בָּאִים נְאֻם-יְהוָה וְכָרַתִּי אֶת-בֵּית יִשְׂרָאֵל וְאֶת-בֵּית יְהוּדָה בְּרִית חֲדָשָֽׁה׃
31
Behold, the days come, saith the LORD, that I will make a new covenant with the house of Israel, and with the house of Judah:

Isaiah 66:21

וְגַם-מֵהֶם אֶקַּח לַכֹּהֲנִים לַלְוִיִּם אָמַר יְהוָֽה׃
21
And I will also take of them for priests and for Levites, saith the LORD.

Acts 6:13

ἔστησάν τε μάρτυρας ψευδεῖς λέγοντας ἄνθρωπος οὗτος οὐ παύεται ῥήματα βλάσφημα λαλῶν κατὰ τοῦ τόπου τοῦ ἁγίου τούτου καὶ τοῦ νόμου·
13
And set up false witnesses, which said, This man ceaseth not to speak blasphemous words against this holy place, and the law:

Ezekiel 16:61

וְזָכַרְתְּ אֶת-דְּרָכַיִךְ וְנִכְלַמְתְּ בְּקַחְתֵּךְ אֶת-אֲחוֹתַיִךְ הַגְּדֹלוֹת מִמֵּךְ אֶל-הַקְּטַנּוֹת מִמֵּךְ וְנָתַתִּי אֶתְהֶן לָךְ לְבָנוֹת וְלֹא מִבְּרִיתֵֽךְ׃
61
Then thou shalt remember thy ways, and be ashamed, when thou shalt receive thy sisters, thine elder and thy younger: and I will give them unto thee for daughters, but not by thy covenant.