"Healing powers" are just ONE of the "benefits" (Psalms 103:2) received from Holy Spirit baptism (I Corinthians 12:7-10; 13).
LISTEN:
We were born DEAD spirits due to the disobedience of Adam (Romans 5:12)!
Since "DEAD" we MUST be "born again" (John 3:5-7).
It is by Holy Spirit BAPTISM that HIS SPIRIT "QUICKENS" our DEAD spirit back to life (Ephesians 2:1).
"So also is the resurrection of the dead. It is sown in corruption; it is raised in incorruption: It is sown in dishonor; it is raised in glory: it is sown in weakness; it is raised in POWER: It is sown a natural body; it is raised a Spiritual body..." (I Corinthians 15:42-44).
Now look how Paul defines "baptism" in Romans 6:4:
"Therefore we are buried with HIM by BAPTISM [We are going to be RAISED just like Christ during Holy Spirit baptism and according to I Corinthians 15:42-44] into death: that LIKE AS Christ was RAISED up from the DEAD by the glory of the Father..."
You see? Our fleshly ways are BURIED with HIM by Holy Spirit baptism (Romans 6:4) and we are RAISED up a new creature.
Ephesians 2:1 "And you hath HE *QUICKENED* who *were* DEAD in your trespasses and sins."
We are then "born again" by HIS SPIRIT!
Romans 8:11 "But if the Spirit of HIM that RAISED up Jesus from the DEAD dwell in you, HE that RAISED up Christ from the DEAD shall also QUICKEN your mortal bodies by HIS SPIRIT that dwelleth in you."
THEN
"THE SPIRIT itself beareth WITNESS with our spirit; that we ARE the children of God" (Romans 8:16)!