Acts 1:2-4

Amplified Bible

² until the day when He ascended to heaven, after He had by the Holy Spirit given instruction to the apostles (special messengers) whom He had chosen. ³ To these [men] He also showed Himself alive after His suffering [in Gethsemane and on the cross], by [a series of] many infallible proofs and unquestionable demonstrations, appearing to them over a period of forty days and talking to them about the things concerning the kingdom of God. ⁴ While being together and eating with them, He commanded them not to leave Jerusalem, but to wait for what the Father had promised, “Of which,” He said, “you have heard Me speak.^(A)