David L. Gray reflects on the transition from the old covenant to a new one through Christ's redemptive suffering as discussed in the readings for the Fifth Sunday in Lent - Year B: Jeremiah's prophecy of a new covenant, Christ’s call to embrace suffering, and how the Catholic Mass allows us to participate in Christ’s Passion, uniting us with His redemptive work. He contrasts the plea for deliverance in the old covenant with the new covenant's invitation to join in Christ's redemptive suffering.