I have a New American Bible that has an unsettling footnote to Matthew 16:21-23. Those verses state, "From that time on, Jesus began to show his disciples that he must go to Jerusalem and suffer greatly from the elders, the chief priests, and the scribes, and be killed and on the third day be raised." The footnote says, "Neither this nor the two later Passion predictions (17:22-23; 20:27-29) can be taken as sayings that, as they stand, go back to Jesus himself. However, it is probable that he foresaw that his mission would entail suffering and perhaps death, but was confident that he would ultimately be vindicated by God (see 26:29)." Is this true?