Daniel 6:12

So they came to the king, and spake before him concerning his commandment, saying, "O king, hast thou not subscribed the statute, that within thirty days whoso requireth his petition of any god or man, but only of thyself, O king, he shall be cast into the den of the lions?" The king answered, and said, "It is true. It must be as a law of the Medes and Persians, that may not be broken."

Daniel 6:8

Wherefore, O king, confirm thou this statute, and make a writing: that the thing which the Medes and Persians have ordained be not altered nor broken."

Esther 1:19

If it please the king, let there go a commandment from him, and let it be written according to the law of the Persians and Medians - and not to be transgressed - that Vashti come no more before king Ahasuerus, and let the king give the kingdom unto another that is better than she.

Daniel 3:8-12

Now were there certain men of the Chaldeans that went even then and accused the Jews,

Acts 16:19

And when her master and mistress saw that the hope of their gains was gone, they caught Paul and Silas, and drew them into the marketplace unto the rulers,

Acts 16:24

Which jailer, when he had received such commandment, thrust them into the inner prison, and made their feet fast in the stocks.

Acts 24:2-9

When Paul was called forth; Tertullus began to accuse him saying, "Seeing that we live in great quietness by the means of thee and that many good things are done unto this nation through thy providence:

Treasury of Scripture Knowledge

Summary

Then they came near, and spake before the king concerning the king's decree; Hast thou not signed a decree, that every man that shall ask a petition of any God or man within thirty days, save of thee, O king, shall be cast into the den of lions? The king answered and said, The thing is true, according to the law of the Medes and Persians, which altereth not.

Bible References

They

Daniel 3:8
Now were there certain men of the Chaldeans that went even then and accused the Jews,
Acts 16:19
And when her master and mistress saw that the hope of their gains was gone, they caught Paul and Silas, and drew them into the marketplace unto the rulers,
Acts 24:2
When Paul was called forth; Tertullus began to accuse him saying, "Seeing that we live in great quietness by the means of thee and that many good things are done unto this nation through thy providence:

The thing

Daniel 6:8
Wherefore, O king, confirm thou this statute, and make a writing: that the thing which the Medes and Persians have ordained be not altered nor broken."
Esther 1:19
If it please the king, let there go a commandment from him, and let it be written according to the law of the Persians and Medians - and not to be transgressed - that Vashti come no more before king Ahasuerus, and let the king give the kingdom unto another that is better than she.