Acts 4:10
then know this, you and all the people of Israel: It is by the name of Jesus Christ of Nazareth, whom you crucified but whom God raised from the dead, that this man stands before you healed. — Peter directly names the source of power: Jesus Christ of Nazareth (the Messiah, the one you know from recent history). The accusation is blunt: 'whom you crucified' (stauros, crucified, hung on a stake), but the inversion is sharper: 'whom God raised from the dead' (egeiro nekros, raised from the dead). The healed man's presence (stands before you) is living proof of the resurrection's power.