God has written His laws in the hearts of all men. We all have a conscience. We all know right from wrong.
God will judge all men according to their deeds. There will be no exception. Those who repent, turn from their evil ways and obey the voice of God speaking in their heart, will find mercy. To those who seek the truth God will reveal Himself in Jesus Christ.
The Holy Spirit convicts the whole world of sin, righteousness and judgment, but few listen and take heed and that is why they will perish. People are evil. They accept and go after evil. They listen to demons and reject the voice of their own conscience as well as the conviction of the Holy Spirit. On judgment day they will have two witnesses testifying against them, their own conscience and the Holy Spirit.
If we obey our conscience, we will do good, not evil. If we obey the Holy Spirit of God and seek the Truth, the Holy Spirit will reveal Jesus to us and He will guide us into all truth.
God has revealed Himself to mankind in many ways, through our conscience, through creation, through nature, He has spoken through holy men and prophets. He revealed Himself through Jesus Christ, who did many miracles, was rejected, crucified, and resurrected to die no more. The dealings of God with man were recorded by men and were included in the Bible, that is freely available to most of the world. God also gave His Holy Spirit to convict the whole world, and guide those who seek the truth, into the whole truth.
Most people are evil and selfish. They seek their own desires at all cost and reject the truth. That is why they will be condemned and cast into eternal punishment and torment in damnation.
Jesus Christ is the only way, life and truth and the Holy Spirit will reveal Jesus to us if we seek the truth. Nobody will have any excuse on judgment day.
Today is the day of salvation. Seek Jesus today. Repent from all evil, stop sinning and obey the words of Jesus as recorded in the gospels, Matthew, Mark, Luke and John. Repent and be baptized as Jesus commanded, seek Him with all your heart and He will give His Holy Spirit in you to teach and guide you into all truth. Obey Him and stay with Him until the end, then you will do right and He will give you eternal life.
May Jesus bless you.