New American Standard Bible (NASB)
20 I have been crucified with Christ; and it is no longer I who live, but Christ lives in me; and [a]the life which I now live in the flesh I live by faith in the Son of God, who loved me and gave Himself up for me.
It is Christ living His life in and through us. We no longer live life in our own strength but trusting In Christ. We surrender our lives to Him. His death on the cross is all the proof you need to know He loves you!