2 Corinthians 12:12:

Truly the signs of an apostle were wrought among you in all patience, in signs, and wonders, and mighty deeds.

See also:

Power, Not Words
To What Extent Are Prolific Miracles Limited to Those Called to the Ministry?
Objection: No One Today Has Apostolic Power Because a Prerequisite for Being an Apostle Is Having Walked with Jesus in Person (Acts 1:20-22)
Objection: Christ’s Command to HEAL THE SICK Stopped Before the Cross and Has Never Been Repeated Since Then, Even in Other New Testament Writings
Objection: We Cannot Say That We Can Do the Acts That the Apostles Did, Because We Cannot Write Scripture, and They Did
Objection: The Signs of an Apostle Do Not Refer to Signs, Wonders and Mighty Deeds, But Rather to Suffering or Perseverance
Objection: If Everyone Could Perform Miracles, Paul’s Signs of an Apostle Would Be Meaningless – He’d Be Just Like Everyone Else