Acts 3:6-7. Worthy Priesthood holders can stand in place of the Savior.

Peter did not ask the Lord to heal the cripple; he did not pray to God to pour out his grace and healing virtue upon the lame man. Instead-acting in the Lord’s name…– he himself commanded the miracle to occur. Peter was the Lord’s servant, his representative and agent; he stood in the place and stead of Christ, doing what the Master would have done if personally present.  (Bruce R McConkie DNTC, “Peter Heals Man Lame from Birth”.)