Jeremiah 6:10

To whom shall I speak, and give warning, that they may hear?.... These are the words of the prophet, despairing of any success by his ministry; suggesting that the people were so universally depraved, that there were none that would hear him; that speaking to them was only beating the air, and that all expostulations, warnings, remonstrances, and testimonies, would signify nothing:

behold, their ear is uncircumcised, and they cannot hearken; their ears were stopped with the filth of sin naturally, and they wilfully stopped their ears like the adder; and so being unsanctified, they neither could hear nor desired to hear the word of the Lord, as to understand it; see Acts 7:51:

behold, the word of the Lord is unto them a reproach; they reproached it, and blasphemed it, as a novel and false doctrine, and thought it a dishonour to them to receive and profess it; and just so the Jews vilified the Gospel, in the times of Christ and his apostles; and as many do now, who treat it with contempt, as unworthy of God, as contrary to reason, as opening a door to licentiousness, and think it a scandal to preach or profess it:

they have no delight in it; they see no beauty nor glory in it; they taste nothing of the sweetness of it; its doctrines are insipid things to them, they having never felt the power of it in their hearts; whereas such who are the true circumcision, who are circumcised in heart and ears, who are born again, these desire the sincere milk of the word; it is to them more than their necessary food; and, with this Prophet Jeremiah, they find it, and eat it, and it is the joy and rejoicing of their hearts, Jeremiah 15:16.