I am not judging any true Christian from another but based on their actions and words, one can tell if one is a Christian or not. Also by looking at what a Christian should be like based on what is said in the New Testament. Can I be wrong at times, yes? But the ultimate person who judges everyone when they die is Jesus and because He is holy, righteous, sinless, etc. no sin can enter His presence. If one has Him, he will not be judged the same way, but will have Jesus as his advocate. Sadly, those who do not believe in Jesus and do not accept his gift of eternal life, will be eternally separated from him in hell, where I don't want anyone to go and neither does Jesus. Jesus paid the penalty of your sin (the lies, the things that have been stolen, the lust that you have committed in your heart, etc). If you accept Jesus Christ into your heart you will be saved as the Bible says in Mark 16:16, whoever believes and is baptized will be saved, but whoever does not believe will be condemned. I once was condemned to hell just like you are now but through Jesus you can have eternal life, the wrath of God will not be upon you, your name will be in the Book of Life, etc. Jesus is the only way to heaven, but it is your choice and everyone else's, it will determine what will happen to you, whether you believe God exists or not, whether you believe there is truth or not, etc. Everyone will have to stand before God, whether one likes it or not.