Matthew 10:1
"And when he had called unto him his twelve disciples, he gave them power against unclean spirits, to cast them out, and to heal all manner of sickness and all manner of disease."
Cross References (ranked by relevance)
Behold, I give unto you power to tread on serpents and scorpions, and over all the power of the enemy: and nothing shall by any means hurt you.
And, behold, I send the promise of my Father upon you: but tarry ye in the city of Jerusalem, until ye be endued with power from on high.
But ye shall receive power, after that the Holy Ghost is come upon you: and ye shall be witnesses unto me both in Jerusalem, and in all Judaea, and in Samaria, and unto the uttermost part of the earth.
And when it was day, he called unto him his disciples: and of them he chose twelve, whom also he named apostles;
John answered and said, A man can receive nothing, except it be given him from heaven.
For I will give you a mouth and wisdom, which all your adversaries shall not be able to gainsay nor resist.
Jesus answered them, Have not I chosen you twelve, and one of you is a devil?