A Covenant Death
That Christ came into the world to die a Covenantal Death for a specific people due to a Eternal Covenant established before the World began, this is seen in that He came to take on not all humanity without exception, but particularly the Seed of Abraham ,an Elect People Heb 2:16
16 For verily he took not on him the nature of angels; but he took on him the seed of Abraham. See Gal 3:29 !
He came to identify with their human nature, and not with that of all mankind without exception. Also this is not to be construed with Abraham's physical seed of the flesh for Two reasons #1. They were not the Elect of God or Chosen of God, which is seen here Rom 11:7
7 What then? Israel hath not obtained that which he seeketh for; but the election hath obtained it, and the rest were blinded.
The rest of Israel National whom were not of the Election, were not Elect, simple enough !
Also seen here with Jesus statement Matt 22:14
14 For many are called, but few are chosen.
Many were Abraham's Physical Seed called into National assembly, but few of them were God's Chosen !
#2 That Abraham's seed according to the flesh , that Israel, they were not the Children of God Rom 9:8
8 That is, They[Abraham's Seed] which are the children of the flesh, these are not the children of God: but the children of the promise are counted for the seed.
But yet the Children of Abraham that Christ Identified with in Heb 2:16 were the Children of God Heb 2:13-14 and the Children of Promise Rom 9:8b; Gal 3:29 !
So Christ in His Covenantal Death, came to Identify with, not all humanity without exception, but with the Children of God [Seed of Abraham] scattered throughout all humanity Jn 11:52
51 And this spake he not of himself: but being high priest that year, he prophesied that Jesus should die for that nation;
52 And not for that nation only, but that also he should gather together in one the children of God that were scattered abroad.
Simply put, He came to die for the Children of God ! And by doing so, He makes them manifested, as to who they are 1 Jn 3:8-10
8 He that committeth sin is of the devil; for the devil sinneth from the beginning. For this purpose the Son of God was manifested, that he might destroy the works of the devil.
9 Whosoever is born of God doth not commit sin; for his seed remaineth in him: and he cannot sin, because he is born of God.
10 In this the children of God are manifest, and the children of the devil: whosoever doeth not righteousness is not of God, neither he that loveth not his brother.