Jesus Christ purchased us with his blood - parties involved

According to these verses and others, God/Jesus purchased/redeemed us with his blood > **Revelation 5:9** > > And they sung a new song, saying, Thou art worthy to take the book, > and to open the seals thereof: for thou wast slain, and hast redeemed > us to God by thy blood out of every kindred, and tongue, and people, > and nation; > > **Acts 20:28** > > Keep watch over yourselves and all the flock of which the Holy Spirit > has made you overseers. Be shepherds of the church of God, which he > bought with his own blood Who was the receiving party - I mean the blood?