Believers are likened to a "flock" of sheep here. Church leaders are entrusted by God with the care of the community of believers just as a shepherd would care for his flock of sheep and protect them from wolves. Alternate translation: "the group of believers the Holy spirit has entrusted to you. Be sure to take care of the church of God" (See: [[rc://en/ta/man/translate/figs-metaphor]])
The shedding of the blood of Christ here is likened to a payment to God for our sins. Alternate translation: "the people Christ saved from their sins by shedding his blood on the cross" (See: [[rc://en/ta/man/translate/figs-metaphor]])