JESUS IS A PRIEST OF A HIGHER ORDER THAN THE LEVITES, HE IS OF THE ORDER OF MELCHIZEDEK. And that is the reason He can be our High Priest although He was not a Levite. (Hebrews 7) The Levites represented the Law, and the Law is Lacking. There is nothing wrong with the law, but there is something wrong with people. And The law is unable to fix what is wrong. “The law makes nothing perfect.”
The law can reveal your sin, but it can’t take away your sin. It condemns you and shows you that you are guilty, but it can do nothing else. It still leaves you separated from God. But Jesus changed all that with The New Covenant.