The answer
This was a pre-incarnation visit of grace by our Lord Jesus Christ. Christ the Logos is a member of the Holy Trinity and the Godhead even before the Incarnation. Thus, His appearance was as an angel but in the form of a man, yet without the restrictions of the flesh. Therefore, when His message and discussion with Abraham concluded, He did not continue to live out His life in the flesh, as did Jesus Christ after the Incarnation. There was no birth or death or any other description of a normal human life span, but His appearance was in the vessel of an angelic form that could conceal the invisible God.Answered by His Eminence Metropolitan Youssef (opens in a new tab)