Grudem and Purswell on the consequences of willful sin

“In general, we may say that some sins have more harmful consequences than others if they bring more dishonor to God or if they cause more harm to ourselves, to others, or to the church. Moreover, those sins that are done willfully, repeatedly, and knowingly, with a calloused heart, are more displeasing to God than those that are done out of ignorance and are not repeated, or are done with a mixture of good and impure motives and are followed by remorse and repentance.”
Wayne Grudem and Jeff Purswell
Bible Doctrine: Essential Teachings of the Christian Faith, p. 219-220.