Heb. 7:26 He is the kind of high priest we need because he is holy and blameless, unstained by sin. He has now been set apart from sinners, and he has been given the highest place of honor in heaven.
The high priest is he who stands before God on behalf of others and offers a sacrifice for their sins. Before the coming of Christ, the high priest was allowed to enter the most holy part of the temple to offer blood before God on first his own behalf, and then the people's. First for his own sins because he too was a sinner in need of forgiveness. Once his heart was pure he could then go to God for the people. It was the most sacred duty he had and he could only do it once a year. He had very strict procedures to follow, and if he didn't do it he would die.
Jesus did away with the high priestly role when he died for our sins because He became our high priest in heaven. He is holy and blameless having never sinned before God. He did not have to make atonement for His sins since He had none. His death was the ultimate sin sacrifice, sufficient to wash away the sins of all people for all time. His sacrifice was the perfect sacrifice sufficient to appease God's wrath against sin. He is now in heaven working to make holy all who give their hearts to Him, preparing them for heaven when they die.
He is now in heaven where there is no sin, standing before God on our behalf. He makes it possible for God to look upon us with favor and pleasure. He has the highest place of honor in heaven as He sits on God's right hand ministering there on our behalf. He is there as our advocate and intercessor for our souls.
He is worthy of all our adoration, worship and praise. Let us never take Him for granted and give Him on earth the honor and glory He deserves, even as He receives it in heaven.