"But you shall receive power when the Holy Spirit has come upon you; and you shall be witnesses to Me in Jerusalem, and in all Judea and Samaria, and to the end of the earth.” Acts 1.8
Nobody needs to receive the Holy Spirit to be healed, delivered from evil or to be prosperous. These miracles are natural wonders of faith in Jesus.
But to an "eyewitness" of His resurrection, a new creature and to possess His character, only by receiving the baptism of the Holy Spirit can you achieve that. He is the One who maintains our salvation until death.
