Jesus Christ took the full punishment that we deserved for our sins as a substitute in our place.
Jesus Christ died as the substitute for sinful humanity, taking humanity’s place on the cross. Examples of substitution Ge 22:13 Nu 3:12-13 Nu 8:18 1Sa 17:9 La 5:7
Taking up my “cross” means a life voluntarily surrendered to God. ― A. W. Pink