Our sins were delt with on the cross. There we died with Jesus and we also were risen with Him to walk in newness of life. Rom. 6

However, we still have to deal with our carnal mind which must be renewed. Rom. 12:1-2,
Paul said in Phil. 2:12-13,

"Work out your own salvation with fear and trembling. For it is God which worketh in you both to will and to do of his good pleasure."

That word 'salvation' also means deliverence. We must change our way of thinking and alow the Holy Spirit to teach us of His ways. Thank God we have the Holy Spirit to teach us all things. As we allow ourselves to be teachable and trusting in the Lord He will lead us into all truth.

Dave