“Every high priest is taken from among men and made their representative before God, to offer gifts and sacrifices for sins. He is able to deal patiently with the ignorant and erring, for he himself is beset by weakness and so, for this reason, must make sin offerings for himself as well as for the people. No one takes this honor upon himself but only when called by God, just as Aaron was. In the same way, it was not Christ who glorified himself in becoming high priest, but rather the one who said to him:
‘You are my son; this day I have begotten you’;
‘You are a priest forever according to the order of Melchizedek.’” (Hebrews 5:1-6)
In the Old Testament, the High Priest was a sinful man called by God to offer gifts and sacrifices for himself and the people. God welcomed only sinful man that came to Him by this High Priest. The Heavenly Father in due time appointed is only son Christ, a man without sin, as High Priest.
“In the days when he was in the flesh, he offered prayers and supplications with loud cries and tears to the one who was able to save him from death, and he was heard because of his reverence. Son though he was, he learned obedience from what he suffered; and when he was made perfect, he became the source of eternal salvation for all who obey him, declared by God high priest according to the order of Melchizedek.” (Hebrews 5:7-10)
Christ can intercede for those that are out of the way of truth, duty, and happiness to lead them kindly back from error, sin, and misery. He was subject to hunger, temptation, suffering, and set an example of fervent prayer. He was strengthened to support the immense weight of Suffering on The Passion of the Christ, because there was no real deliverance from death.
The Heavenly Father raised and exalted Christ due to His suffering and obedience, and gave Him the power of saving all sinners, who come unto God through Christ. He is the Intercessor between the Heavenly Father and Humanity according with the article Intercession. Christ taught us humble obedience to the will of God in our afflictions. We need affliction, to teach us submission. His obedience in our nature encourages us to obey and to expect support and comfort in our temptations and sufferings. Perfected through suffering and obedience, Christ became the source of eternal salvation to His obedient brethren.