Faith in His Name Alone

Acts 3:12-16   
12 So when Peter saw it, he responded to the people: “Men of Israel, why do you marvel at this? Or why look so intently at us, as though by our own power or godliness we had made this man walk? 13 The God of Abraham, Isaac, and Jacob, the God of our fathers, glorified His Servant Jesus, whom you delivered up and denied in the presence of Pilate, when he was determined to let Him go. ... 16 And His name, through faith in His name, has made this man strong, whom you see and know. Yes, the faith which comes through Him has given him this perfect soundness in the presence of you all.

Peter and John did not heal a lame man - through faith in the name Jesus, God's Son lifted up, the man was made perfectly whole in soul and body.  Salvation was the goal and the physical healing was the assurance for eyes to see. It was not the spirituality or strength of the disciples to heal, but God's work alone; they were just trusting to do as they were drawn to do and speak, trusting God to work.  Those who claim to heal apart from God's work with the goal of salvation often are self serving instead of God pleasing.