Again I love what Sam Storms has said on this. No need to repeat it. Let me simply add these comments to the motivation not to sin. Not only do I “get God,” but I “get the Spirit in fullness.” Sin often has the result of grieving and quenching the work of the Spirit in my life and all the benefits that he brings. When I repent of sin and turn to God in faith, times of refreshing come from the presence of God carried by the Spirit. I also “get” to stay under the fount of grace. When I chose sin, I’m usually choosing a substitute for Jesus, a false gospel, a false savior (Gal. 1:6). The result is that I become separated from the stream of grace that flows from Jesus (Gal.5). Because I can do nothing apart from Jesus and his grace, there is incredible motivation to avoid sin. Finally I’d also say that I “get” or that incredible promises are made to those who walk in obedience (turning from sin). Consider all the promises given to us for abiding in Christ, his love and truth in John 15. He bears much fruit, his asks and receives in prayer and the joy of Jesus is made full in us.