This entire scripture reading speaks of the witnesses to Jesus’ actions during his last days. Why is this important?  Because you only have witnesses to actual events.  Witnesses validate the truth of history. Witnesses stand as a barrier to people just making up stories. And in Luke’s gospel, he describes the witnesses to Christ’s final days on Earth, the witnesses of his last supper, the witnesses of His arrest, of his torture, crucifixtion, and death on the cross.  Right now, in this Gospel, we don’t discuss it, but it is also important that we recognize these witnesses as validating the truth of His ulimate resurrection.