Hang around a religious individual, and soon enough you would hear the word 'sin'. You may also be left confused by how it is used to describe different unrelated things. But what is 'sin'?
Every society has laid down standards or rules on how to live (called laws). Violations of these rules are called crimes and are punishable in accordance with the law.
Now, God has His own standards and rules. Sin is just a fancy word to describe a violation of these standards. Since sin is a violation of God's standards, the important question then is; 'what are God's standards?'
The Bible states that 'the [basis of the] judgment (indictment, the test by which men are judged, the ground for the sentence) lies in this: the Light has come into the world, and people have loved the darkness rather than and more than the Light, for their works (deeds) were evil' (John 3: 19 AMPC).
Basically, there is only one crime; rejecting the Light. Hence, if the crime is rejecting the Light, then we can infer that the standard is accepting the Light. 'What is the Light?', you might ask. The Bible teaches that this 'Light' is a person. This Light is Jesus*.
Unlike our society with many rules, God has only one rule. His standard is 'believe in Jesus & His grace'. The only crime He acknowledges is the violation of this rule.
Sin is not about actions, thoughts or words. It is about believing in Jesus.
No one gets condemned because they rejected Jesus; they remain condemned because they reject Jesus.
Do you believe in Jesus?
*John 8: 12 Jesus spoke to the people once more and said, “I am the light of the world. If you follow me, you won’t have to walk in darkness, because you will have the light that leads to life.” (NLT)