What is sin? What does it mean to have sinned? Is it saying something unkind? Is it taking a candy bar that isn’t yours? Is it not adhering to the ten commandments? Using scripture, sin is essentially a transgression of the law of God, an act of rebellion. It is an act that is in direct opposition of God.
 Everyone who makes a practice of sinning also practices lawlessness; sin is lawlessness. (1 John 3:4 ESV)
We know that the world is full of sin, and will continue to be until some appointed day in the future. Only God the Father knows when this will come to be. But until then, we are experiencing the effect of this curse on all creation. Knowing that God is never changing also means that He is never changing on his position with sin.
Sin deserves punishment
For if God did not spare angels when they sinned, but cast them into hell and committed them to chains of gloomy darkness to be kept until the judgment; (2 Peter 2:4 ESV)
Angels are spiritual beings that were created to serve God. In terms of a creation timeline, the bible doesn’t necessarily say, but we can suppose that they were created before humanity, and sometime before the world was created. In terms of the hierarchy of creation, they are above humans. They are at a higher level of intelligence and power. The first sin was the rebellion of Satan, an angel, who opposed God by denying and refusing to submit to the authority of God. Not even angels escape the punishment of sin. Those who rebelled were cast into hell and will not escape the judgement of God.
When I came across this scripture, I felt the heavy weight of Gods righteous punishment on sin. Not even angels, who are closer to God than humans, are free from the effect and punishment of sin. One single sin is enough to be separated from the presence of God. Do I really understand my condition? Do I understand the heaviness of the sin in my life?
God has provided a way for forgiveness
Knowing that God is never changing also means that his righteous punishment of sin does not contradict his agape, holy love. God is love (1 John 4:8). God is in fact being love when he punishes sin. We cannot simply apply our human understanding of an attribute of character to God. We may say someone isn’t loving when applying punishment. But Gods characters do not oppose each other. He showed us His love when he was made manifest in Jesus Christ (1 Timothy 3:16).
Before the beginning of time, before the beginning of creation, God knew that Satan would rebel against Him. He knew that we would not choose God from our own will. Yet He provided a way for us all to be reconciled and restored into our relationship with Him.
For God so loved the world, that he gave his only Son, that whoever believes in him should not perish but have eternal life. (John 3:16 ESV)
We have access to God through Jesus Christ alone. There is no other way (John 14:6). Jesus experienced the punishment for the sin that we so deserve. He satisfied the Fathers righteous punishment when He bore our sin on that cross and experienced the wrath of God. Though He never sinned, He became sin so that in Him we might become the righteousness of God (2 Corinthians 5:21).
So what do we need to do? Repent and believe. (Acts 16:30). Repentance is a change of mind. We must have a right view of sin. We must turn from our ways, and believe. Believe that Jesus is the Son of God. Believe that Jesus died for our sins. Believe that He defeated death and sin on the cross.
We will one day live in a world without sin
 Then I saw a new heaven and a new earth, for the first heaven and the first earth had passed away, and the sea was no more.  And I saw the holy city, new Jerusalem, coming down out of heaven from God, prepared as a bride adorned for her husband.  And I heard a loud voice from the throne saying, “Behold, the dwelling place of God is with man. He will dwell with them, and they will be his people, and God himself will be with them as their God.  He will wipe away every tear from their eyes, and death shall be no more, neither shall there be mourning, nor crying, nor pain anymore, for the former things have passed away.” (Revelation 21:1-4 ESV)
And this is our eternal hope. There will be a day that sin will be no more. Imagine what that will look like. No more sickness. No more murder. No more hurt. No more tears. No more broken relationships. No more feelings of anxiety, fearfulness, depression. No corruption. In heaven, the redeemed will lack absolutely nothing, and will have the supreme treasure that is above everything. Being in the presence of the glory of God!
Having a right view of sin will result in a right view of eternity.