It is a “term used by Jacob and Nephi to describe those unwilling to yield their hearts in obedience to God (2 Ne. 9:33; Hel. 9:21). … Those who were circumcised in the flesh but broke the conditions of the covenant could be viewed as uncircumcised of heart (Rom. 2:25–29)” (Largey, Book of Mormon Reference Companion, 772).