Under the Law

Hebrews 2.16, 17 clearly states that "He had to be made like His brethren."  Brethern is plural and there wered not any 'brethren' in the garden of Eden.  Adam is singular.

Christ came in the fullness of time (see Mark 1:14, 15; Daniel 9:25) “to redeem them that were under the law.” But in order to do this, he himself had to be “made under the law.” This is in harmony with Hebrews 2:17, which says: “Wherefore in all things it behooved him to be made like unto his brethren, that he might be a merciful and faithful high priest in things pertaining to God, to make reconciliation for the sins of the people.” The people whom Christ came to redeem were “under the law,” therefore he was made like them, “under the law.”