Acts 4:7-10:

And when they had set them in the midst, they asked, By what power, or by what name, have ye done this?
Then Peter, filled with the Holy Ghost, said unto them, Ye rulers of the people, and elders of Israel,
If we this day be examined of the good deed done to the impotent man, by what means he is made whole;
Be it known unto you all, and to all the people of Israel, that by the name of Jesus Christ of Nazareth, whom ye crucified, whom God raised from the dead, even by him doth this man stand here before you whole.

Notes on Acts 4:7-10:

Jesus said that when you ask anything in His name, He will do it.  This is an example of that.  Peter, talking about the crippled man at the gate called Beautiful, said that the man was whole by the name of Jesus Christ, and then said that by Him he stood before them whole.  Jesus backs His name when we use it!

The King James word impotent refers to being crippled, not to needing pills shown on television ads that say things that you hope your kids don’t ask you about.

See also:

The Power in the Name of Jesus
Jesus the Healer Has Never Changed
How to Be Baptized with the Holy Spirit
Objection: By Jesus’ Stripes We Were Spiritually, Not Physically, Healed
Objection: Disease Viruses Are Part of God’s Creation and Are Therefore Good, Even Though We Often Don’t Think So When We Catch Them