colossi3: Arguably it is a good custom to show respect, but not by kneeling before the pope if as he claims, he is descended from Ap. Peter, who decidedly was a man. I am surprised that a Catholic would ask for scripture to prove a biblical truth: I thought they believe their magisterium and tradition over and above the word of God.
Acts 10:
24) And on the morrow as they entered into Caesarea, Cornelius was waiting for them, and had called together his kinsmen and near friends.
25) And as Peter was coming in, Cornelius met him, and fell down at his feet, and worshipped him.
26) But Peter took him up, saying 'Stand up; I myself also am a man'.