Because Jesus did not deserve to die, his death has been used by God as a legal basis to buy back what Adam and Eve lost, namely, the prospect of everlasting life in an earth - wide paradise.
* ولهذه الغاية اسس يهوه الله ملكوتا ،‏ حكومة سماوية ،‏ ليحكم على كل الجنس البشري .‏