Sin is basically a denial of God's right of possession.
It is not enough to be delivered from sin; it is enough to be delivered to righteousness.
Christians are not patched-up sinners, they are new creations.
You cannot be responsible for salvation until first you've been responsible for sin.
To him who knows to prosper and does it not, to him it is sin.
The pattern of the prodigal is: rebellion, ruin, repentance, reconciliation, restoration.
Sin is still sin - no matter how you spell it.