O house of Israel, cannot I do with you as this potter? saith the LORD. Behold, as the clay is in the potter's hand, so are ye in mine hand, O house of Israel.

Wesley's Notes

18:6 Cannot I do - That God hath an absolute sovereign power to do what he pleases with the work of his hands: but he acts as a just judge, rendering to every man according to his works.

Jamieson-Fausset-Brown Bible Commentary

6. Refuting the Jews' reliance on their external privileges as God's elect people, as if God could never cast them off. But if the potter, a mere creature, has power to throw away a marred vessel and raise up other clay from the ground, a fortiori God, the Creator, can cast away the people who prove unfaithful to His election and can raise others in their stead (compare Isa 45:9; 64:8; Ro 9:20, 21). It is curious that the potter's field should have been the purchase made with the price of Judas' treachery (Mt 27:9, 10: a potter's vessel dashed to pieces, compare Ps 2:8, 9; Re 2:27), because of its failing to answer the maker's design, being the very image to depict God's sovereign power to give reprobates to destruction, not by caprice, but in the exercise of His righteous judgment. Matthew quotes Zechariah's words (Zec 11:12, 13) as Jeremiah's because the latter (Jer 18:1-19:15) was the source from which the former derived his summary in Zec 11:12, 13 [Hengstenberg].

Matthew Henry's Concise Commentary

18:1-10 While Jeremiah looks upon the potter's work, God darts into his mind two great truths. God has authority, and power, to form and fashion kingdoms and nations as he pleases. He may dispose of us as he thinks fit; and it would be as absurd for us to dispute this, as for the clay to quarrel with the potter. But he always goes by fixed rules of justice and goodness. When God is coming against us in judgments, we may be sure it is for our sins; but sincere conversion from the evil of sin will prevent the evil of punishment, as to persons, and to families, and nations.