He Had To Be Made Like His Brethren

"The adopted sons of God, who were brethren before Christ's incarnation, being from all eternity predestinated to the adoption of children: Christ's incarnation was in time, and after that many of the brethren existed; and it was only for their sakes that he assumed human nature; and therefore it was proper he should be like them in that nature, in all things…that there might be a conformity between the head and members; though there is in some things a difference; his sufferings were by way of punishment, and were attended with wrath, and were meritorious, which cannot be said of theirs; but that he should have an human nature, as to its essence and perfection, like to theirs, was necessary: it was proper he should be truly and really man, as well as truly God, that he might be a merciful and faithful high priest; he could not be an high priest, offer sacrifice for sin, and make intercession, unless he was man; nor could he be a "merciful" and compassionate one, sympathize with his people in their sorrows, temptations, and sufferings, unless he was like them in these; nor would he be a "faithful", that is, a true and lawful one otherwise, because every high priest is taken from among men:" – John Gill