Heb:10:14 For by one sacrifice, He has made perfect forever, those who are being made holy. One sacrifice- instead of repeated ritualistic sacrifices, one has been made enough. The death of Jesus Christ on the cross. He has - God Himself did this for undeserved people like me. Not by lineage. Nor by inheritance. Neither by the deeds I did. I deserved only hell and punishment. While we were still enemies, Christ made friends with us. While we were still sinners, Christ died for us. We did not choose Him, He chose is. Made perfect forever, those who are being made holy - Called to be made holy - a process. Made perfect in Jesus - a crisis. Sanctification - a process. Justified - a crisis. Forever - for eternity. There is now no condemnation for those who are in Christ Jesus. It is finished.
Heb:10:4 For it is not possible that the blood of bulls and goats could take away sins. What has been done ritualistically and symbolically has been put away with by the righteous deeds of Jesus, the Son of God. God Himself intervening into mankind to redeem him. For the remission of sins, no more ritualism or symbolism is required now. Once and for all the righteous blood of God who became man, has been shed. Now man's debt is clear. My debt has been cleared. There is no need for repeated meaningless rituals to please God. He has already been please God. He has already been pleased with you, dear one. He did this perfect deed on the cross, because He chose to. What an amazing Jesus! What an amazing Father! Image credit: https://stock.adobe.com/search?k=crucifixion+blood