SALVATION Hebrews 5:8-10

Son though he was, he learned obedience from what he suffered and once made perfect, he became the source of eternal salvation for all who obey him and was designated by God to be high priest in the order of Melchizedek.

Son though he was 
Hebrews 1:1-2  In the past God spoke to our ancestors through the prophets at many times and in various ways, but in these last days he has spoken to us by his Son, whom he appointed heir of all things, and through whom also he made the universe.

he learned obedience from what he suffered 
Philippians 2:8  And being found in appearance as a man, he humbled himself by becoming obedient to death--even death on a cross!

and once made perfect, he became the source of eternal salvation for all who obey him 
Hebrews 2:10  In bringing many sons and daughters to glory, it was fitting that God, for whom and through whom everything exists, should make the pioneer (originator, founder, a leader, ruler or prince, a champion) of their salvation perfect through what he suffered.
Hebrews 7:28  For the law appoints as high priests men in all their weakness; but the oath, which came after the law, appointed the Son, who has been made perfect forever.

and was designated by God to be high priest 
Hebrews 5:5  In the same way, Christ did not take on himself the glory of becoming a high priest. But God said to him, "You are my Son; today I have become your Father." (Psalm 2:7)
Hebrews 2:17  For this reason, he had to be made like them, fully human in every way, in order that he might become a merciful and faithful high priest in service to God, and that he might make atonement for the sins of the people.

in the order of Melchizedek 
Hebrews 5:6  And he says in another place, "You are a priest forever, in the order of Melchizedek." (Psalm 110:4)

(parentheses are mine)

Scriptures taken from the Holy Bible, New International Version® NIV®, Copyright© 1973, 1978, 1984, 2011 by Biblica, Inc.® Used by permission. All rights reserved worldwide.