Midrash su Geremia 33:20

The kings of the House of David likewise abolished the precept of circumcision. Jehoiakim extended his own foreskin (to hide his circumcision), as it is said: Now the rest of the acts of Jehoiakim, and his abominations which he did, and that which was found upon him (II Chron. 36:8). What is the meaning of was found upon him? It means that he stretched his foreskin. Others maintain that this verse indicates that he tattooed his skin. Hence, we learn that both the priests and the kings abrogated the covenant of circumcision. The Holy One, blessed be He, declared: “I informed Aaron and David that their offspring would survive forever, as it is said: Ought you not to know that the Lord, the God of Israel, gave the kingdom over Israel to David forever, even to him and to his sons by a covenant of salt? (ibid. 13:5). And unto Aaron I swore: It is an everlasting covenant of salt before the Lord unto thee and to thy seed with thee (Num. 18:19). But they (their offspring) abrogated the covenant of circumcision!” The Holy One, blessed be He, declared unto the prophet: Go and say unto them: If ye can break My covenant with the day, and My covenant with the night, so that there should not be day and night in their season; then may also My covenant be broken with David, My servant, that he should not have a son to reign upon his throne; and with the Levites the priests, My ministers (Jer. 33:20–21). When the Israelites heard this, they cried out: Woe unto us, the two families which the Lord did choose, He cast them off (ibid., v. 24). The Holy One, blessed be He, responded to them: Consider thou not what this people have spoken, saying: The two families, etc. (ibid.). And He asked: “When were they cast off?” At the time they abrogated the commandment mentioned in the verse that follows: Thus saith the Lord, If My covenant be not with day and night, etc. (ibid., v. 25), and it says: Awake, awake, put on thy strength, O Zion, put on thy beautiful garments, O Jerusalem, the Holy City, for no more shall enter into thee henceforth the uncircumcised and the unclean (Isa. 52:1). Amen and so may it be Thy will.