'Look' in the Bible

And Peter, fastening his eyes upon him with John, said, Look on us.

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?

Wherefore, brethren, look ye out among you seven men of honest report, full of the Holy Ghost and wisdom, whom we may appoint over this business.

But if it be a question of words and names, and of your law, look ye to it; for I will be no judge of such matters.