Because you have sinned, you must now face the penalty for your sin. This penalty is referred to in the Bible as the “second death.” The “second death” is eternal separation from God “in the lake which burneth with fire and brimstone.” This is speaking of Hell, and God tells us that everyone who has sinned will spend their eternity there.
“For the wages of sin is death” Romans 6:23a
“But the fearful, and unbelieving, and the abominable, and murderers, and whoremongers, and sorcerers, and idolaters, and all liars, shall have their part in the lake which burneth with fire and brimstone: which is the second death.” Revelation 21:8