And he took him by the right hand, and lifted [him] up: and immediately his feet and ankle bones received strength.
Note 6 at Ac 3:7: This man was healed instantaneously (see note 5 at Lu 5:25) but not until Peter had reached down and lifted the man up. Faith must be acted on (see note 6 at Joh 9:7). Peter acted on his faith, and this lame man also acted in faith (Ac 3:16) by allowing Peter to give him a hand.
Faith is made perfect, or complete, by our actions (Jas 2:22). Actions do not produce faith. Faith is a gift of God (Eph 2:8) that comes through hearing God's Word (Ro 10:17). But true faith doesn't carry its full power until it is acted on. There must first be faith, then actions, then physical results, always in that order.