Why in all things it behooved him to be made like to his brothers…
1. He must be merciful; for He must deal with God for sinful and miserable man, for to relieve him. And He is then merciful, when He doth not only know man's misery, but is inwardly sensible of it, so as to be moved and that effectually to succour him. This mercifulness is opposed not only to ignorance of others' misery, and senselessness, but also to harshness, severity, cruelty. And Christ was more merciful than ever any man or angel was, and there was great need He should be so; for if every offence, nay, if many and great offences, should move Him to passion, and enrage Him so as to reject them and their cause, or proceed to plead against them, or condemn them, how many thousands should perish everlastingly?
2. As He is merciful, so He must be faithful, and such as poor sinners may safely trust unto, and depend upon, when they commit their cause concerning their eternal estate into His hands. Christ may be said to be faithful, either to God, who hath given the office of high priest, and a command to discharge it, or unto man, who, according to the rules of God's Word, believes in Him, and commits Himself and all that he hath unto Him. And then He is actually faithful, when He performs all things belonging to His sacerdotal office, and goes through with His work until He hath perfectly finished, and sinful man attains that for which he trusted Him. Man may be merciful and not faithful; Christ is both, and will be sensible of our case and cause, will mind it, and do it as His own. In this respect our hope is firm and our comfort is unspeakable. Blessed are all they that trust Him. This is His qualification, the best that ever was or can be in any priest.
3. The work, the principal work is, to make reconciliation for the sins of His people.
(1) He hath His people, and they are such as know Him and trust in Him.
(2) These have their sins and are guilty.
(3) Reconciliation therefore is necessary; otherwise they die, they perish everlastingly.
(4) There must be some one, and the same a priest both merciful and faithful, to make this reconciliation, and this is Christ.
Parallel VersesKJV: Wherefore in all things it behoved 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.
WEB: Therefore he was obligated in all things to be made like his brothers, that he might become a merciful and faithful high priest in things pertaining to God, to make atonement for the sins of the people.