2 Corinthians 13:3
"Since ye seek a proof of Christ speaking in me, which to you-ward is not weak, but is mighty in you."
Cross References (ranked by relevance)
For it is not ye that speak, but the Spirit of your Father which speaketh in you.
Truly the signs of an apostle were wrought among you in all patience, in signs, and wonders, and mighty deeds.
For I will give you a mouth and wisdom, which all your adversaries shall not be able to gainsay nor resist.
Sufficient to such a man is this punishment, which was inflicted of many.
(For the weapons of our warfare are not carnal, but mighty through God to the pulling down of strong holds;)
To whom ye forgive any thing, I forgive also: for if I forgave any thing, to whom I forgave it, for your sakes forgave I it in the person of Christ;