Hebrews 7:12

For, the priesthood being changed, there takes place of necessity a change of law also.

Isaiah 66:21

And I will also take of them for priests and for Levites, saith Jehovah.

Jeremiah 31:31-34

Behold, days come, saith Jehovah, that I will make a new covenant with the house of Israel and with the house of Judah:

Ezekiel 16:61

And thou shalt remember thy ways, and be confounded, when thou shalt receive thy sisters who are older than thou, together with those who are younger than thou; for I will give them unto thee for daughters, but not by virtue of thy covenant.

Acts 6:13-14

And they set false witnesses, saying, This man does not cease speaking words against the holy place and the law;

Treasury of Scripture Knowledge

Summary

For the priesthood being changed, there is made of necessity a change also of the law.

Bible References

A change

Isaiah 66:21
And I will also take of them for priests and for Levites, saith Jehovah.
Jeremiah 31:31
Behold, days come, saith Jehovah, that I will make a new covenant with the house of Israel and with the house of Judah:
Ezekiel 16:61
And thou shalt remember thy ways, and be confounded, when thou shalt receive thy sisters who are older than thou, together with those who are younger than thou; for I will give them unto thee for daughters, but not by virtue of thy covenant.
Acts 6:13
And they set false witnesses, saying, This man does not cease speaking words against the holy place and the law;