Either you have been made completely complete in Him, or there is still some work to be done. If there is still work to be done, then there is still sacrifices and offerings to be made, so that we can show God that we are doing our part. You are COMPLETE in Him, through the finished work of the cross! NOTHING left for you to do! This is pure 100% undiluted grace! He does not desire, nor want our sacrifices, or offerings of any kind. (Heb 10:8-10) He simply wants us to believe the truth. Jesus is our once-for-all offering for everything! There is no more obligation, Jesus fulfilled our obligation. …What must I do? Believe in the one whom He sent. Our doing, is to believe.