You [apostles] did not choose me, but I chose you, and appointed you to go and bear much fruit [i.e., through their evangelizing], and that your fruit should last. Then the Father will give you whatever you ask Him for in my name [i.e. by my authority].
However, when the Holy Spirit of truth comes, He will lead you [apostles] into all the truth. For He will not speak on His own authority, but will speak [only] what He hears [from the Father]. And He will tell you about the things that are to come.
Now, following His death on the cross [and His resurrection], Jesus appeared alive [to His apostles] for forty days, and demonstrated by many convincing proofs [that He had been raised bodily from the dead]. [During that time] He also spoke to them about the [coming] kingdom of God.