'Holy Covenant' in the Bible

Then shall he return into his land with great substance; and his heart'shall be against the holy covenant; and he shall do his pleasure , and return to his own land.

For ships of Kittim shall come against him; therefore he shall be grieved, and shall return, and have indignation against the holy covenant, and shall do his pleasure : he shall even return, and have regard unto them that forsake the holy covenant.

To show mercy towards, our fathers, And to remember his holy covenant;