Acts 1:1-5 - The Preface
1 Truly the first word had I made of all things, O Theophilus, of which Jesus began to do and also to teach, 2 Till the day having commanded the sent whom he chose through the Holy Spirit, he was taken up: 3 To them also he presented himself living, after he suffered, by many infallible signs, through forty days seen to them, and speaking the things of the kingdom of God:
4 And, being collected together, he enjoined them not to be separated from Jerusalem, but to wait for the solemn promise of the Father, which ye heard of me. 5 For John truly immersed in water; and ye shall be immersed in the Holy Spirit not after these many days.