God wants to save people, He is not looking for a reason to reject people. He is not looking for a reason to reject you. He did everything He could to remove the things He had against you in the sacrifice of Christ, to make life with Him secure by faith rather than works.
BUT
He does seem to give us a warning in Hebrews. I’ll cut to the chase, the warning is; don’t reject Jesus and go back to Old Covenant sacrifices. Yes, that’s the “willful sin” the author of Hebrews warns about, rejecting Jesus and trusting in the blood of goats and bulls rather than Christ.
Now, you don’t have a temple to take your goat to, but you do have your dead works that you think make you clean again with God (more on this in the sermon). Jesus’ lifeblood cleanses you, and God’s circumcision of your old nature makes you new. That alone is your righteousness and your removal of sin.