From Genesis to Revelation you’ll find it – the word priest.
From Melchizedek (meaning king of righteousness) to Aaron (meaning light-bringer) to the individual members of God’s kingdom today (meaning Christians), the Lord has used people, people of his choosing, people known as priests, to represent, serve and fulfill his purpose.
Called to be holy in every dispensation, the role of every priest was not meant to be substitutionary in regards to man’s relationship with God – rather the purpose was meant to be more of an intermediary. The priest represented the people to God and God to the people in matters of personal holiness, devotion and sin.
But limited by mortality, imperfect due to immorality and constrained by legality, the role of every God-fearing priest pointed and looked forward to the office of the One who would not be restrained by time, by personal imperfections or by a law that could not render a soul perfect – namely Jesus: called after the order of Melchizedek, serving in a higher tabernacle than that of Aaron and able to represent to the uttermost those who come to God through his own sin atoning sacrifice.
And God has it made it clear that Jesus is the priest of God, the perfect meeting point, and there is no representation without him (Hebrews 7-9). EA
“Seeing then that we have a great High Priest who has passed through the heavens, Jesus the Son of God, let us hold fast our confession. For we do not have a High Priest who cannot sympathize with our weaknesses, but was in all points tempted as we are, yet without sin. Let us therefore come boldly to the throne of grace, that we may obtain mercy and find grace to help in time of need.” (Hebrews 4:14-16)