Acts 1:3-5

King James Version

³ To whom also he shewed 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, saith he, ye have heard of me.

⁵ For John truly baptized with water; but ye shall be baptized with the Holy Ghost not many days hence.