In genesis the serpent said you shall not surely die
The serpent lied. Though they did not die a spiritual death they did die a physical death which was what God was talking about.
The job of the prophet is to confirm that if we do not repent we shall die a spiritual death which the devil will try to convince people is not true. So priests are responsible. God will not send another priest or person to preach for him. He will require the blood of the deceived from the hand of the priest. I want to also comment on the orthodoxy without christ thread. Yes preaching is required from all but from experience and my mistakes I believe it is best only to be done if asked for non clergy. But the priest has the right to preach and I believe we should hold the priests responsible for not preaching. It is their job. I suppose however there are times even the priest need not preach if preaching has been done enough. Also not all priests should preach only those whom God has given the talent as mentioned in Ephesians 4:11. But pastors must warn their spiritual children of the danger of their sins
18 When I say to the wicked, ‘You shall surely die,’ and you give him no warning, nor speak to warn the wicked from his wicked way, to save his life, that same wicked man shall die in his iniquity; but his blood I will require at your hand. 19 Yet, if you warn the wicked, and he does not turn from his wickedness, nor from his wicked way, he shall die in his iniquity; but you have delivered your soul.