1 John 5:13 (from NKJV) says “These things I have written to you who believe in the name of the Son of God, that you may know that you have eternal life, and that you may continue to believe in the name of the Son of God.” You can know for sure before you die. This verse says so.
The bad news in a nutshell is that Adam and Eve disobeyed and thus we have fallen short, we all make mistakes, we all sin – no one is perfect. (Romans 3:23 – NKJV- says “for all have sinned and fall short of the glory of God.”)
The good news is – God sent a solution. John 3:16 (NKJV) says “ For God so loved the world that He gave His only begotten Son, that whoever believes in Him should not perish but have everlasting life.” Anyone who calls on the name of the Lord can be rescued (saved) and forgiven of their sins. He offers peace and a new way of life!