The instruments of a foolish shepherd - Such as a bag without bread, a scrip without measure, and a staff without a hook, etc., things that were needless or of no use; to point out to the Jewish pastors, who took no care of the flock, but devoured them, or ruled them with force and with cruelty.

a foolish.

Isaiah 6:10-12 Make the heart of this people fat, and make their ears heavy, and shut their eyes; lest they see with their eyes...

Jeremiah 2:26,27 As the thief is ashamed when he is found, so is the house of Israel ashamed; they, their kings, their princes, and their priests...

Lamentations 2:14 Your prophets have seen vain and foolish things for you: and they have not discovered your iniquity, to turn away your captivity...

Ezekiel 13:3 Thus said the Lord GOD; Woe to the foolish prophets, that follow their own spirit, and have seen nothing!

Matthew 15:14 Let them alone: they be blind leaders of the blind. And if the blind lead the blind, both shall fall into the ditch.

Matthew 23:17 You fools and blind: for whether is greater, the gold, or the temple that sanctifies the gold?

Luke 11:40 You fools, did not he that made that which is without make that which is within also?

The Good Shepherd' and his one Flock' - Last Discourse at the Feast of Tabernacles.
The closing words which Jesus had spoken to those Pharisees who followed HIm breathe the sadness of expected near judgment, rather than the hopefulness of expostulation. And the Discourse which followed, ere He once more left Jerusalem, is of the same character. It seems, as if Jesus could not part from the City in holy anger, but ever, and only, with tears. All the topics of the former Discourses are now resumed and applied. They are not in any way softened or modified, but uttered in accents of …
Alfred Edersheim—The Life and Times of Jesus the Messiah

Of the Incapacity of an Unregenerate Person for Relishing the Enjoyments of the Heavenly World.
John iii. 3. John iii. 3. --Except a man be born again, he can not see the kingdom of God. IN order to demonstrate the necessity of regeneration, of which I would fain convince not only your understandings, but your consciences, I am now proving to you, that without it, it is impossible to enter into the kingdom of God; and how weighty a consideration that is I am afterwards to represent. That it is thus impossible, the words in the text do indeed sufficiently prove: but for the further illustration …
Philip Doddridge—Practical Discourses on Regeneration

Fifthly, as this Revelation, to the Judgment of Right and Sober Reason,
appears of itself highly credible and probable, and abundantly recommends itself in its native simplicity, merely by its own intrinsic goodness and excellency, to the practice of the most rational and considering men, who are desirous in all their actions to have satisfaction and comfort and good hope within themselves, from the conscience of what they do: So it is moreover positively and directly proved to be actually and immediately sent to us from God, by the many infallible signs and miracles …
Samuel Clarke—A Discourse Concerning the Being and Attributes of God