Today's readings emphasize the importance of truth telling, since the testimony of two witnesses was enough to establish the truthfulness of statements made under Jewish law. Susanna's accusers were both lying, yet the truth was uncovered through important inconsistencies in their statements.
Jesus' accusers wanted him to establish his identity as Messiah with a second witness, disallowing the proof from the many miraculous signs he was working and Jesus' allusion to support from His Father. In fact, His claims to be one with the Father only added to their rage and finalized their decision to execute Him for blasphemy.
Let us ask for the courage to tell the truth, strength to resist cooperating with those who lie and for the truth of Christ to rule our lives.