Jesus went to the Father, and there he sits on the right hand of the Father, and in Him has been given all power in heaven and on Earth, so how much power has Satan? Nothing, only the power we give Satan. If we let sin in, if we choose against Jesus, then he gets a hold on us.

At Pentecost, the disciples were together, and they all received the Holy Spirit, the same Holy Spirit as Jesus had because Jesus poured it out over them, and they spoke in tongues as of fire distributing on them, there was a sound of a mighty rushing wind and they were all speaking different languages.

When all the people heard them speaking, they said, what is it? And Peter explained to them, you crucified Jesus the Messiah, and when they realized that, they cried out, what shall we do, and Peter said repent and be baptised every one of you in the name of Jesus Christ for the forgiveness of your sins, and you will receive the gift of the Holy Spirit.