But, you apostles will receive power when the Holy Spirit descends on you and [then] you will become My witnesses [i.e., to tell what you know] in Jerusalem, in [the countries of] Judea and Samaria, and [even] to the distant regions of the earth.”
not to everyone, but to us [apostles] who were specially chosen by God to be witnesses [of His resurrected body], and to eat and drink with Him after He arose from the dead.
And we [apostles] are witnesses of all that He did, both in the region where Jews lived and in Jerusalem [as well]. But they killed Him by hanging Him on a tree [i.e., the cross].
[Then, at the hands of the Roman authorities] you killed the Prince of [never ending] life, but God raised Him from the dead, and we [apostles] were [reliable] witnesses of it.
from His immersion by John [the Immerser] until He was received up from us [in a cloud]. Of these people [we must choose] someone to become a witness with us [i.e., to tell people] of Jesus' resurrection [from the dead].”
So, the elders in the various places where you live, are to receive the following exhortation. (I too, am an elder and have witnessed the sufferings of Christ, and am also assured of partaking of the glorious [salvation, 1:5] that will someday be revealed).