'Righteous Man' in the Bible

Which of the prophets did your fathers not persecute? And they killed those who foretold about the coming of the Righteous man, of whom ye now have become betrayers and murderers,

And they said, Cornelius a centurion, a righteous man and one that feareth God, and well reported of by all the nation of the Jews, was warned of God by a holy angel to send for thee into his house, and to hear words from thee.

And he said, The God of our fathers appointed thee to know his will, and to see the Righteous man, and to hear a voice from his mouth,