"But you will receive power when the Holy Spirit comes upon you."
Acts 1:8
And being assembled together with them, He commanded them not to depart from Jerusalem, but to wait for the Promise of the Father, “which,” He said, “you have heard from Me; for John truly baptized with water, but you shall be baptized with the Holy Spirit not many days from now.” Acts 1:4-5
Jesus answered, "Truly, I tell you emphatically, unless a person is born of water and Spirit he cannot enter the kingdom of God. ...
John 3:5