Yes, we still battle with sin. Yes, we still have to crucify our flesh on a daily basis. "For if you live according to the flesh you will die; but if by the Spirit you put to death the deeds of the [sinful nature], you will live" (Rom. 8:13 NKJV). We have to choose to live from the new heart, and our old nature doesn't go down without a fight. I'll say more about that later. For now the question on the table is: Does the Bible teach that Christians are nothing but sinners-that there is nothing good in us? The answer is no! Christ lives in you. You have a new heart. Your heart is good. That sinful nature you battle is not who you are.