As we've studied extensively in this thread, True Repentance is an actual "turning away from sin." Jesus cannot do that for us. As Peter said, our "past sins" have been forgiven when we come to Christ. Then we, with the help of the Spirit, must put our sins to death. This WE must do. Jesus cannot do it for us. He can't. The choice is always ours whether to obey or refuse His charge.
Peter writes to "Christians" telling them of the things they must add to their faith if they are to inherit the promises of God.
"For if these qualities are yours and are increasing, they will keep you from being useless or unfruitful in the knowledge of our Lord Jesus Christ.
9 The person who lacks these things is blind and shortsighted and has forgotten the cleansing from his past sins. 10 Therefore, brothers, make every effort to confirm your calling and election, because if you do these things you will never stumble. 11 For in this way, entry into the eternal kingdom of our Lord and Savior Jesus Christ will be richly supplied to you." - 2Pet 1:8-11 HCSB
Paul knew this very well, and told us that if we continue in sins after we have been forgiven and set free, we will die. Jesus forgiveness does not automatically continue to forgive sins that we choose to keep committing. That would be to spit on the Cross.
"Therefore, brethren, we are debtors—not to the flesh, to live according to the flesh. 13 For if you live according to the flesh you will die; but if by the Spirit you put to death the deeds of the body, you will live. 14 For as many as are led by the Spirit of God, these are sons of God." - Rom 8:12-14
We want to put it all on Jesus, and we simply can't. Jesus bore His Cross. We must bear ours. I choose to believe the Bible over the popular "Christian" songs on the radio.