Jesus tried to tell us we had power to overcome all demons and to cure diseases (Lk 9:1). He told us we could “cure the sick, raise the dead, heal the leprous, expel demons” (Mt 10:8). He even promised we would do greater by far than He ever did, if we only believed in Him (Jn 14:12).
However, Jesus saved the best till last. Before His Ascension, the risen Jesus, with nail-scarred hands and a hole in His side, was speaking to the apostles concerning the signs that would accompany those who had professed their faith (Mk 16:17). Jesus mentioned five signs: expelling demons, speaking new languages, handling serpents, drinking poison without suffering harm, and healing the sick (Mk 16:17-18). “No sooner had He said this than He was lifted up before their eyes in a cloud which took Him from their sight” (Acts 1:9). Jesus ascended “into heaven and took His seat at God’s right hand” (Mk 16:19).
When a Man has split the clouds and left planet earth behind, He’s certainly proven Himself to be an expert on signs. When Jesus says to us: “You will receive power when the Holy Spirit comes down on you” (Acts 1:8), He knows what He’s talking about.