Matthew 23:29-31 NIV

29 "Woe to you, teachers of the law and Pharisees, you hypocrites! You build tombs for the prophets1 and decorate the graves of the righteous.

References for Matthew 23:29

30 And you say, 'If we had lived in the days of our forefathers, we would not have taken part with them in shedding the blood of the prophets.'
31 So you testify against yourselves that you are the descendants of those who murdered the prophets.2

References for Matthew 23:31