Promise of the Holy Ghost

1  The former treatise have I made, O Theophilus, of all that Jesus began both to do and teach, 
2  Until the day in which he was taken up, after that he through the Holy Ghost had given commandments unto the apostles whom he had chosen: 
3  To whom also he showed himself alive after his passion by many infallible proofs, being seen of them forty days, and speaking of the things pertaining to the kingdom of God: 
4  And, being assembled together with them, commanded them that they should not depart from Jerusalem, but wait for the promise of the Father, which, said he, you have heard of me. 
5  For John truly baptized with water; but you shall be baptized with the Holy Ghost not many days from now. 

8  But you shall receive power, after that the Holy Ghost is come upon you: and you shall be witnesses unto me both in Jerusalem, and in all Judaea, and in Samaria, and unto the uttermost part of the earth.