but ye shall receive power, the Holy Spirit having come upon you, and ye shall be My witnesses both in Jerusalem, and in all Judaea, and Samaria, and to the utmost limit of the earth."

"This Jesus God raised up; of which fact we all are witnesses.

And we are witnesses of all things which He did both in the country of the Jews and in Jerusalem; Whom they also slew, hanging Him on a tree.

Who was seen, during many days, by those who came up with Him from Galilee to Jerusalem; who, indeed, are now His witnesses to the people.

and that repentance and remission of sins should be preached in His name to all the nations, beginning from Jerusalem.

and ye also testify, because ye are with Me from the beginning."

This is the third time I am coming to you. At the mouth of two witnesses, and of three, shall every word be established.

how shall we escape, having neglected so great salvation; which, indeed, having at first been spoken through the Lord, was confirmed to us by those who heard;

And so

"When the Advocate shall come, Whom I will send to you from the Father, the Spirit of truth, Who proceedeth from the Father, He will testify concerning Me;

But I tell you the truth: it is expedient for you that I go away; for, if I do not go away, the Advocate will not come to you; but, if I go, I will send Him to you,

God testifying with them, both with signs and wonders and manifold miracles, and distributions of the Holy Spirit, according to His will?

to whom it was revealed that, not to themselves, but to you they were ministering them; which things now were reported to you through those who proclaimed the Gospel to you by the Holy Spirit sent forth from Heaven; into which things angels desire to look carefully.

Whom

And they were all filled with the Holy Spirit, and began to speak with other tongues, even as the Spirit was giving them to declare.

While Peter was yet speaking these words, the Holy Spirit fell on all those hearing the word.

But this He spake concerning the Spirit, Whom those who believed on Him were about to receive; for the Spirit was not yet given, because Jesus was not yet glorified.

General references

And, when they bring you in before the synagogues, and the rulers, and the authorities, be not anxious how or what ye shall answer, or what ye shall say;

Ye are witnesses of these things,