This example of Jesus’ compassion and God’s grace is what shines through to me.  Jesus didn’t ok the sin.  He is a God of second chances.  He allows us to learn through His grace.  The accusers didn’t stick around, because they were all convicted.  They had all sinned in one fashion or another.  It is important to note that we should correct sin when we find it out (specifically in us).  And if we point out sin in another, to do so with grace, humility, and the spirit of reconciliation.