Matthew Poole and continuators on Lamentations 4:13

13 ¶ For the sins of her prophets, and the iniquities of her priests, that have shed the blood of the just in the midst of her .

Not for their sins alone who were the false Prophets and Baals Priests, but for their sins in an eminent degree, they were the Ringleaders, either incouraging the people to the wickednesses they committed, or not restraining them, and denouncing the wrath of God against them. So though they were the corrupt Magistrates that had shed the innocent blood, yet the Priests and Prophets became guilty of it, either incouraging the Magistrates to it, or soothing them up in their bloody courses, or by burning the Children that were burnt in the Valley of Hinnom. The Ecclesiastical men were a great cause of the first and last destruction of Ierusalem, and so they are of most other places that come to ruine through their neglect of their duty, or incouraging others in their wicked courses, which both sheweth us how great a blessing to a people a godly, conscientious ministry is: and how great a plague and curse a ministry is which is otherwise, see Ier. 5.31. and 23.21.