'Decree' in the Bible

I saw that even though I had sent unfaithful Israel away for all her adulteries and had given her a divorce decree, her treacherous sister Judah didn't fear, and she, too, committed adultery.

Fear ye not me? saith the LORD: will ye not tremble at my presence, which have placed the sand for the bound of the sea by a perpetual decree, that it cannot pass it: and though the waves thereof toss themselves, yet can they not prevail; though they roar, yet can they not pass over it?

For though I, the Lord who rules over all, planted you in the land, I now decree that disaster will come on you because the nations of Israel and Judah have done evil and have made me angry by offering sacrifices to the god Baal."