A Definition of Sin

For some people sin means “breaking the rules” for which you deserve punishment. The weakness of this definition is that all one needs to do is to change the rules and then you’re OK. If the church says its OK or you can find a passage of scripture to support your position then you act without guilt even if it harms someone else.
A better definition of sin is “broken relationship.” Broken relationship between yourself and God, yourself and another or within your self. Even if we are not technically in the wrong, if broken relationship is experienced, sin is present.

John 3:17  "Indeed, God did not send the Son into the world to condemn the world, but in order that the world might be saved through him.

Look for further discussion in the coming days and on Sunday, but is divorce sin? I would say that by definition it is sin. It is broken relationship. The divorce itself is likely not the sin, however. The brokenness is the process leading up to the divorce. Indeed, sometimes the divorce is the step towards healing the brokenness. As they say, all marriages may be born in heaven, but many of them are currently living in hell.