See Jeremiah 31:31-34 and Luke 22:14-23. This is language first used in Jeremiah's promise of rescue and renewal of the exiled people of God in Babylon. It promises a coming day when God would make a new covenant unlike the one which Israel had broken.
and when he had found him, he brought him to Antioch. For a whole year they met with the church and taught a great...
He also told this parable to some who trusted in themselves that they were righteous, and treated others with contempt: “Two men went up...
No weapon that is fashioned against you shall succeed, and you shall refute every tongue that rises against you in judgment. This is the...