Acts 20:28
Keep watch over yourselves and the entire flock of which the Holy Spirit has made you overseers. Be shepherds of the church of God, which He purchased with His own blood.
Revelation 5:9
And they sang a new song: “Worthy are You to take the scroll and open its seals, because You were slain, and by Your blood You purchased for God those from every tribe and tongue and people and nation.