OJB
The Hisgalus [Revelation, Appearance, Exposure of what is Nistar (Hidden), Sod (Secret), Raz (Mystery)] of Rebbe, Melech HaMoshiach Yehoshua which Hashem gave to him to show to his mesharetim (servants, klei kodesh, ministers) MAH DI LEHEVE (“what will happen,” Dan 2:28f), the things which are destined to take place, and speedily; Rebbe, Melech HaMoshiach made it known by sending his malach (angel) to his mesharet (servant, keli kodesh, minister), Yochanan. [AMOS 3:7]
CJB
This is the revelation which God gave to Yeshua the Messiah, so that he could show his servants what must happen very soon. He communicated it by sending his angel to his servant Yochanan,
AMP
This is the revelation of Jesus Christ [His unveiling of the divine mysteries], which God [the Father] gave to Him to show to His bond-servants (believers) the things which must soon take place [in their entirety]; and He sent and communicated it by His angel (divine messenger) to His bond-servant John,
Was Revelation written to the Jews, or 7 churches?
(not to churches - to be seen later)