God promises His Spirit would fall on all people. The manifestation of the outpouring would be prophesy, dreams and vision. There would be shown wonders in the heavens and on the earth. Everyone who call on the name of the Lord will be saved!
In Ezekiel, God promises to give us a new heart and put his Spirit in us. He promises to remove our stony hearts and give us a new heart of flesh. The Holy Spirit will enable us to obey and to follow his laws. God will no longer hide his face from us but pour out his Spirit on us.
The other recipients are all who put their faith in Jesus as the Messiah.