It is funny how the first chapter of Acts has been brought up, a capter that refutes at leats three main points of the JW's cliam to be God's "organization":
Lets look at verses 6 to 11 -
6 So when they had come together, they asked him, “Lord, will you at this time restore the kingdom to Israel?” 7 He said to them, “It is not for you to know times or seasons which the Father has fixed by his own authority. 8 But you shall receive power when the Holy Spirit has come upon you; and you shall be my witnesses in Jerusalem and in all Judea and Samaria and to the end of the earth.” 9 And when he had said this, as they were looking on, he was lifted up, and a cloud took him out of their sight. 10 And while they were gazing into heaven as he went, behold, two men stood by them in white robes, 11 and said, “Men of Galilee, why do you stand looking into heaven? This Jesus, who was taken up from you into heaven, will come in the same way as you saw him go into heaven.”
In those 6 verses we have Jesus saying that itis NOT up to man to KNOWANY of the times that God has decided on.
We have Jesus saying that after the HS comes upon them, they will be witnesess to HIM ( Jesus) to the whole world.
We have the angels ( Two men in white robes) telling them that when Jesus returns, he shall return ( from Heaven) in the same way he left (to heaven) and which was way that?
he was lifted up, and a cloud took him out of their sight.
Which tells us that he shall return "from the clouds" and ( As paul also sates) , all will SEE HIS VISIBLE presence ( And gaze on him who they have pierced).
So, we have in those verse that MAN does not and will now know that days that God has set, that Those the receive the HS will be CHRIST'S WITNESSES and that Christ shall return and he shall be seen.