If we deliberately continue sinning after we have received the knowledge of the truth, there is no longer any sacrifice that will take away sins, but only a fearful expectation of judgment… Think how much more terrible the punishment will be for he who has trampled underfoot The Son of God, who has treated as an unholy thing the blood of the covenant that sanctified them, and who has insulted the Spirit of Grace.” Hebrews 10:26-29 Adapted

When we water down the meaning of sin, we water down the sacrifice that paid for it. If we won’t call sin what it is, the entire framework collapses. No honest diagnosis, no real cure. No real cure and the rescue mission that Jesus was sent on is rendered meaningless.