But we see Jesus, who was made a little lower than the angels, for the suffering of death crowned with glory and honor, that He by the grace of God, might taste death for everyone.  (10) For it was fitting for Him, for whom are all things and by whom are all things, in bringing many sons to glory, to make the captain of their salvation perfect through sufferings.  (11) For both He who sanctifies and those who are being sanctified are all of one, for which reason He is not ashamed to call them brethren

The author of the letter to the Hebrews is unknown.  This letter was written to the Christian Jews who were wavering in their belief in face of persecution from non-Christian Jews.  The unbelieving Jews would not accept Jesus as the Messiah because of his death, especially because of His death on the cross.  The Jews said that the Messiah was to conquer all enemies – not to die in such an ignominious way, as a common criminal.  So the author of Hebrews is showing why Jesus’ death does not disqualify Him as the Messiah and Savior.  This was God’s plan – His plan which is always unexpected and foolishness to the wise of this world.  The cross was the very power and wisdom of God.  The death of Jesus was God’s eternal purpose.

Sin had to be punished and Jesus was perfect and the perfect sacrifice.  Jesus became sin so that we might be forgiven.  This shows God’s perfect love that God gave His Son to save us.  Jesus’ death was fitting because it showed His perfect humanity.  He had to be tempted as human in all things as we are – and He had to suffer as humans do as the perfect substitute for man’s sin.  Jesus in his humanity was like Adam and Eve before the fall so He didn’t have the lusts of the flesh but it was real temptation from Satan to disobey God.