And ye my flock, the flock of my pasture, are men, and I am your God, saith the Lord GOD.

Jamieson-Fausset-Brown Bible Commentary

31. ye my flock . are men-not merely an explanation of the image, as Jerome represents. But as God had promised many things which mere "men" could not expect to realize, He shows that it is not from man's might their realization is to be looked for, but from God, who would perform them for His covenant-people, "His flock" [Rosenmuller]. When we realize most our weakness and God's power and faithfulness to His covenant, we are in the fittest state for receiving His blessings.

Matthew Henry's Concise Commentary

34:17-31 The whole nation seemed to be the Lord's flock, yet they were very different characters; but he knew how to distinguish between them. By good pastures and deep waters, are meant the pure word of God and the dispensing of justice. The latter verses, 23-31, prophesy of Christ, and of the most glorious times of his church on earth. Under Him, as the good Shepherd, the church would be a blessing to all around. Christ, though excellent in himself, was as a tender plant out of a dry ground. Being the Tree of life, bearing all the fruits of salvation, he yields spiritual food to the souls of his people. Our constant desire and prayer should be, that there may be showers of blessings in every place where the truth of Christ is preached; and that all who profess the gospel may be filled with fruits of righteousness.