When Peter saw this, he said to them: "People of Israel, why does this surprise you? Why do you stare at us as if by our own power or godliness we had made this man walk?"
NIV
And Peter, seeing it, answered the people, You men of Israel, why are you so surprised and wondering at this? Why do you keep staring at us, as though by our [own individual] power or [active] piety we had made this man [able] to walk?
AMP
And when Peter saw it, he answered unto the people, Ye men of Israel, why marvel ye at this? or why look ye so earnestly on us, as though by our own power or holiness we had made this man to walk?
KJV