Albert Barnes on Acts 7:27

But he that did, etc. Intent on his purpose, filled with rage and passion, he rejected all interference, and all attempts at peace. It is usually the man that does the injury that is unwilling to be reconciled; and when we find a man that regards the entreaties of his friends as improper interference, when he becomes increasingly angry when we exhort him to peace, it is usually a strong evidence that he is conscious that he has been at fault. If we wish to reconcile parties, we should go first to the man that has been injured. In the controversy between God and man, it is the sinner who has done the wrong that is unwilling to be reconciled, and not God.

His neighbour. The Jew with whom he was contending.

Who made thee, etc. What right have you to interfere in this matter? The usual salutation with which a man is greeted who attempts to prevent quarrels.