What is the core message of the Bible, of Christianity, it's the need and way of salvation through Jesus. Why do I or anyone need salvation? Because all of us have moved away from our Creator, from God, basically we are His enemies and His wrath is upon us. The 'created' have rebelled against the Holy and Righteous Creator.
For if, when we were God's enemies, we were reconciled to him through the death of his Son, how much more, having been reconciled, shall we be saved through his life - Romans 5:10
Whoever believes in the Son has eternal life, but whoever rejects the Son will not see life, for God's wrath remains on him - John 3:36
For all have sinned and fall short of the glory of God - Romans 3:23
Some people will say 'I have sinned only a little, I'm sure God will overlook that, as I'm really a good person and do a lot of good deeds'.
To God sin is sin, all have sinned and when God looks at you, he sees no difference between you and say, Adolf Hitler. Why is that? Lets say you have a favourite white shirt or top, does it make any difference if at a restaurant a waiter accidentally drops a whole bottle of red wine over your shirt or if you just put a pen in your shirt's top pocket after signing for your meal and your pen leaks a small blob of ink? Either way your white shirt is ruined! God sees a stain on you, doesn't matter if it's huge or small! Only when you allow Jesus to put His clean white shirt over your's, does God see you as acceptable.
Do you really expect God to just overlook your sins, because you do good deeds? Would you expect a respectable judge to let you off a crime that you are guilty of, just because you are a son or daughter or relative? Could you really be released from any type of major crime, by telling the judge or police that you do a lot of good deeds? If it doesn't work like that here on earth, why do you think it would work like that with God? Don't get it wrong, any sin is a major crime against God. All have sinned!
God loves us and wants to remove evil without having to remove all of us. He is a Righteous Judge and King, and does not change, but he created a way of fulfilling all his requirements. He came to earth himself as Jesus the Son, to live the life you should have lived, and suffer the punishment and die the death you deserve. He made it as simple as He could, all you have to do is believe and repent.
For the wages of sin is death, but the gift of God is eternal life in Christ Jesus our Lord - Romans 6:23
For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life - John 3:16
Whoever believes in the Son has eternal life, but whoever rejects the Son will not see life, for God's wrath remains on him - 3:36
Salvation is gained by confessing Jesus, the Son of God, what he has done for you and asking God to come into your heart and your life, a life you now choose to live for the glory of God. It is not by any good works that you are saved, it is a gift of God.
It is up to you how you want to face God, accepted or as an enemy, but know this, we will all face our Creator one day!