Wilful Sin

For if we go on sinning willfully after receiving the knowledge of the truth, there no longer remains a sacrifice for sins, but a terrifying expectation of judgment and the fury of a fire which will consume the adversaries. It is a terrifying thing to fall into the hands of the living God.
Hebrews 10:26-27,31

This is not written for “unbelievers.” This is written for believers who think grace means they can get away with bad behaviours, “because God will forgive me anyways.”
No. It doesn’t work that way.