" THE ABSENT ELEMENT IS what is expressed in the final sentence of the prayer recorded in Acts 4: “Stretch out your hand to heal and perform miraculous signs and wonders” (v. 30). What gains unbelievers’ attention and stirs the heart is seeing the gospel expressed in power. It takes more than academic rigor to win the world for Christ. Correct doctrine alone isn’t enough. Proclamation and teaching aren’t enough. God must be invited to “confirm the word with signs following” (see Heb. 2:4). In other words, the gospel must be preached with the involvement of the Holy Spirit sent down from heaven. "

― Jim Cymbala , Fresh Wind, Fresh Fire: What Happens When God's Spirit Invades the Heart of His People