First, we have all sinned and fall short of the mark God has set for each of us. Can you honestly say you have never done evil in your entire life, what bad thoughts toward another person have crossed your mind, you may have never spoken them, you've deliberately hidden them. So have I and everybody else, Christian or not! Christians recognize that Jesus' sacrifice for mankind was God's unmerited favor toward all people living, a gift of grace, which none deserve, which can be either accepted or rejected.
The time of threshing is upon the earth, the separating of the good figs from the bad figs, the wheat from the chaff, the sheep from the goats. If one rejects the gift, a goat they will be, but will they go to hell, my answer is a resounding, NO! Because when Jesus returns the time of grace comes to an end, and His sheep belong to Him, they already have their names written in the Book Of Life, they are those of the First Resurrection and they are blessed. But His 1000 reign on earth has a reason, it will be a time of teaching, of being disciplined, in the ways of God, it will be another time for decision making, for by good works and choosing Jesus, before one has to stand before the Great White Throne Judgment determines eternity for them. If belief on Jesus and enough good works(going out amongst other goats and helping them come to Jesus) are written in the other books, then the goat becomes one of those of the Second Resurrection, and their names are then written in the Book of Life, they will then take part in God's eternal kingdom. Those that do not choose God will not be cast into an eternal hell, God would have no such place in His kingdom. The still unrepentant goats will suffer the same fate as the one they still desire to follow, Satan, being consumed with a fire from within, poof, in one second they go up in flame and smoke, spiritual body and soul vanish, forever. No one of the First or Second Resurrection will mourn, nor shed a tear for them, for God removes them from the consciousness of His children, it will simply be as if they had never existed. It is God's desire to save as many of His created souls as possible, by belief and grace, or by belief and works, He wants to win over all to Himself. You may not believe your a sinner now, and that the I AM THAT I AM and Satan, are a made up fairytale, but everyone will see where they stand in the eyes of Almighty God when Jesus touches His feet on the Mt. of Olives at His return and the threshing begins!