Discounting the power of God.

I don't know if you've heard of the Gospel being compared to the cure for cancer, and how it shouldn't be kept only to a select group. Following that line of thought, if the Gospel is truly the solution for the cancer of sin that has stricken the human race, its power to mend and heal should be the chief part of its message. No doctor promotes a medicine based on its taste, but on its effectiveness in curing the patient of his or her condition. Similarly, no Christian should tote the Gospel as mere Prosperity, but to convey it with all of its intended power - to restore a fallen soul to a purposeful and fruitful relationship with its Maker.

No medicine is proved effective till it cures someone, and neither should the Gospel. Therefore, how can the Gospel be preached without the power of God? If preached without power, it will only serve as a good tale to share over a drink. If preached with power, seen through a living testimony, it will indeed be good news to the hearer. Therefore, if you profess that Christ is Lord and Savior, preach the Gospel with power, not just clever speech. Remember, not a single one of the apostles failed to walk in the power of God while they lived and breathed on earth, fulfilling the Great Commission. 

"For I am not ashamed of the gospel, for it is the power of God for salvation to everyone who believes, to the Jew first and also to the Greek." - Apostle Paul to the Roman church in Romans 1:16