>>So, the Bible is useless, and we’re set adrift here without instruction, to do what’s right in our own eyes, and just hope that God shows mercy on us because we tried hard to be a good person.<<
I never said that.
I said God has infinite mercy. You may not believe that, but I do,
Yes, that infinite mercy was shown in the sacrifice of His Son on the cross that whosoever believes in Him will have everlasting life.
Your very comment says you do. God has already spoken on this. If you believe in Christ, you live eternally in heaven. If you do not believe in Christ, you live eternally in hell. God in His Word is so very clear on this. There are no second chances AFTER death. It is too late then. Being “good” doesn’t cut it.
He has an infinite regard for justice, too. If we accept the gift of salvation, both are satisfied. If not...