Who is this Great High Priest in Heaven?

In Hebrews 4:14–5:10, the preacher declares Jesus Christ is our great High Priest and the source of our eternal salvation. Pastor Paul van Engelenhoven preaches the High Priest who passed through the heavens, who can sympathize, who was appointed by God, who makes reverent prayer, who learned obedience through suffering, and who is the source of our eternal salvation.
"And being made perfect, he became the source of eternal salvation to all who obey him."