I find it interesting how such a thread can come to be, considering there is no such thing. The word of God supplies no evidence that there is "power in the name of Jesus". That would be a conclusion formed from human reasoning, not Holy Spirit truth or Scriptural evidence. That the power of salvation is found in the proclamation of the Gospel is truth, that there is power in the Kingdom of God there is no doubt, but there is no other extraordinaty supernatural display of God's power in the earth beyond what is seen in everyones' lives, believer and unbeliever alike. Anyone attempting to display a "power' other than God is deluded and outside spiritual understanding. There is no power except it be from God.
There is no power assigned to any in the Body of Christ besides the Apostles. It was given to them to usher in the Gentile interim. The gifts of the Spirit in the Body were manifested to prove that their commission as Apostles was from God, and did not exist anywhere they were not overseeing. With the truth of Paul's evangel of grace being less and less believed, and the Judaizers out of Jerusalem gaining more and more influence, (R.C. the crowning victory for them), the power of God has been greatly diminished. It is the failure of the ecclesia at large to uphold the teachings of Paul as the only truth for the nations that has led to this.
The only power we retain is to obtain from on High the knowledge and wisdom and realization of who He is by the renewing of our minds, and to proclaim the truth that God is conciliated with all men everywhere, not holding their offenses against them, the blood of the cross having nullified their sins. We are ambassadors, not disciples. Disciples were empowered, we are not disciples of the Lord. We are His Body, and that is about as close as it gets to being perfect, and puts us well beyond the rudiments of being instructed. All that remains is to be transformed in the twinkling of an eye at His coming.
fivesense