'Flock of God' in the Bible

I appeal therefore to those who are elders among you; I am their brother-elder and a witness to what the Christ suffered, and I am to share in the glory that is to be revealed??2 be shepherds of the flock of God that is among you, not as though it were forced upon you but of your own free will, and not from base love of gain but freely,

Feed the flock of God which is among you, taking the oversight thereof, not by constraint, but willingly; not for filthy lucre, but of a ready mind;