The work of salvation is finished. God’s righteous demands against sin have been fully and completely satisfied. God raised His Son from the dead and has highly exalted Him. He now lives and has overcome death and the grave on your behalf.
The only thing I have to offer back to God is what He gave me through His gift of salvation and His Spirit. I can’t take any credit for who I am; I must give God all the glory. I have no reason to be proud.