"The diseased have ye not strengthened, neither have ye healed that which was sick, neither have ye bound up that which was broken, neither have ye brought again that which was driven away, neither have ye sought that which was lost; but with force and with cruelty have ye ruled them." (Ezekiel 34:4)
What a responsibility for the pastor is outlined in this verse. It's interesting to note the order: those in the sheepfold (though diseased, sick, and broken) come first to be ministered unto. Then those astray, then those lost. Interesting the progression: diseased - sick - broken - driven away - lost.