Hebrews 7:12

Because if the priests are changed, it is necessary to make a change in the law.

Isaiah 66:21

And some of them will I take for priests and Levites, says the Lord.

Jeremiah 31:31-34

See, the days are coming, says the Lord, when I will make a new agreement with the people of Israel and with the people of Judah:

Ezekiel 16:61

Then at the memory of your ways you will be overcome with shame, when I take your sisters, the older and the younger, and give them to you for daughters, but not by your agreement.

Acts 6:13-14

And they got false witnesses who said, This man is for ever saying things against this holy place and against 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 some of them will I take for priests and Levites, says the Lord.
Jeremiah 31:31
See, the days are coming, says the Lord, when I will make a new agreement with the people of Israel and with the people of Judah:
Ezekiel 16:61
Then at the memory of your ways you will be overcome with shame, when I take your sisters, the older and the younger, and give them to you for daughters, but not by your agreement.
Acts 6:13
And they got false witnesses who said, This man is for ever saying things against this holy place and against the law:

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain