'My Covenant' in the Bible

Nevertheless I will remember my covenant with thee in the days of thy youth, and I will establish to thee an everlasting covenant.

And I will establish my covenant with thee, and thou shall know that I am LORD,

Therefore thus says lord LORD: As I live, surely my oath that he has despised, and my covenant that he has broken, I will even bring it upon his own head.

in that ye have brought in foreigners, uncircumcised in heart and uncircumcised in flesh, to be in my sanctuary, to profane it, even my house, when ye offer my bread, the fat and the blood. And they have broken my covenant, [to add