Jeremiah 9:26

In the utmost corners: some refer this to the place of their habitation, as in corners, and remote parts of the wilderness, as it were separated from other nations, and therefore might think themselves furthest remote from danger; but some rather choose to refer it to their manners, as in cutting the corners of their hair, which was forbidden the Jews, Leviticus 19:27. The like description in Jeremiah 25:23. Uncircumcised in the heart: see the foregoing verse. God regards not the outward sign, but principally respects the circumcision of the heart. Here ends that sermon that began at Jer. vii.